Color FISH Research Articles

Influence of Different Temperatures and Sexes on the Survival and Stress Responses of Nile Tilapia (Oreochromis niloticus L.)

This study was conducted to assess the influence of different water temperature ranges and sexes on the stress response of Nile tilapia. Sixteen proactive males and sixteen proactive female fish were used in the study. There were eight combinations of factors, and each combination was replicated four times. Changes in eye color pattern (ECP), ventilation rate (VR), and skin color of the fish were monitored after reaching the treatment temperature of the environment. Mortality of fish was also monitored. Results showed that the ECP of fish was significantly (P<0.01) affected by water temperature and sex of fish. Similarly, VR of fish was also significantly (P<0.01) affected by water temperature and sex of fish. Decreased dissolved oxygen (DO) was observed in increasing water temperature which may have also contributed to the stress response of Nile tilapia besides the increasing water temperature. Two out of four fish in T4M died after 6-12 hours of exposure while in T4F three out of four fish died after 2-4 hours. There was a decrease in the final weight of fish in all combinations of factors. On body color, both male and female fish exposed to increasing water temperatures exhibited an intense body color (presence of vertical stripes). From the results of this study, male fish had significantly lower (P<0.01) ECP scores and VR values than female fish when exposed to different ranges of water temperature. Likewise, male fish exposed to high temperatures (39-40°C) survived longer than female fish. Therefore, it can be concluded that male fish are more tolerant to increasing water temperature up to 37°C than female fish since males can easily cope with stress.

Formulation of Feed with Different Source of Carotenoids on the Colors Quality of Sunkist Balloon Molly Fish (Poecilia sp.)

The parameter value of ornamental fish is determined by the brighter the color of a type of ornamental fish, the higher the value so that farmers need to maintain the color of the ornamental fish by providing feed containing color pigments that can be obtained from vegetable and animal sources of carotenoids. Sunkist balloon molly fish (Poecilia sp.) were stocked in an aquarium measuring 60 × 30 × 30 cm3 (5 fish/l), Objectives of this study was to determine the effect of feeding formulations using different carotenoid sources with the best treatment for improving the color quality of sunkist balloon molly fish (Poecilia sp.). The method used was experimental (quantitative) completely randomized design (CRD) with 3 treatments, 1 control, and 3 repetitions. Feed was given ad libitum (5% body weight) 3 times a day. Color quality data were analyzed using ImageJ Software and one-way ANOVA test. The results of the study showed that feed utilization efficiency, feed conversion ratio and growth performance were not significantly different between treatments. There was a significant effect on improving the quality of the color shown in the P₃ (yellow pumpkin) treatment of 10% as the best treatment among others. Water quality parameter that observed trend to be normal and stable from the beginning to the end of the maintenance period.

Prospective Associations between Dietary Patterns and Abdominal Obesity in Middle-Aged and Older Korean Adults.

This study aimed to identify major dietary patterns associated with abdominal obesity in middle-aged and older Korean adults. Data from the Korean Genome and Epidemiology Study were used. A total of 48,037 Korean adults aged ≥40 years without abdominal obesity at baseline were followed-up. Dietary assessment was conducted using a validated 106-item food-frequency questionnaire, and dietary patterns were identified using factor analysis. Abdominal obesity was defined as a waist circumference of ≥90 cm for men and ≥85 cm for women, according to the Korean Society for the Study of Obesity. Multivariable Cox proportional-hazards models were used to calculate the hazard ratios (HRs) and 95% confidence intervals (CIs) for the future risk of abdominal obesity for each dietary pattern after adjusting for potential covariates. After an average follow-up of 4.89 years, we reported 5878 cases (1932 men and 3946 women) of abdominal obesity. Based on factor analysis, three major dietary patterns were identified in both men and women: the "healthy", "coffee and sweets", and "multi-grain" patterns. In the fully adjusted model, the "healthy" pattern was inversely associated with the incidence of abdominal obesity (HR for fourth vs. first quartile: 0.86; 95% CI: 0.75-0.98; p for trend = 0.0358 for men; HR for fourth vs. first quartile: 0.90; 95% CI: 0.83-0.99; p for trend = 0.0188 for women), whereas the "coffee and sweets" pattern was positively associated with it (HR for fourth vs. first quartile: 1.23; 95% CI: 1.08-1.40; p for trend = 0.0495 for men; HR for fourth vs. first quartile: 1.14; 95% CI: 1.04-1.25; p for trend = 0.0096 for women). In contrast, the "multi-grain" pattern in men and women showed no significant association with the incidence of abdominal obesity. Diets rich in colorful vegetables, seaweeds, mushrooms, tubers, fruits, soy products, and fish and low in coffee, sweets, and oils/fats might be favorable for reducing the future risk of abdominal obesity, particularly in middle-aged and older Korean adults.

Feed Modification Using Carrot Flour to Improve Growth and Brightness Koi Fish Color

Color is vital in determining the quality of koi fish (Cyprinus carpio L.) and is even seen as an important component in selecting ornamental fish. Therefore, alternative feed sources are needed, which are highly nutritious and increase the brightness of fish. This study aimed to determine the effect of adding carrot flour (Daucus carota L.) and the concentration that had a good impact on increasing the color of Koi fish (Cyprinus carpio L.). This study used six treatments where treatment A was fed containing Spirulina as a control. Treatment B was the addition of carrot flour with a concentration of 5%, C with a concentration of 10%, D with a concentration of 15%, E with a concentration of 20%, and F with a concentration of 25%. The results showed that adding carrot flour affected the brightness of the color of the fish. The best color improvement is found in treatment F, with a value of 6.

Highly sensitive and selective gas sensors based on 2D/3D Bi2MoO6 micro-nano composites for trimethylamine biomarker detection

Metal oxide semiconductor based gas sensors have been verified to be an effective way for food quality detection. However, the high operating temperature, insufficient sensitivity, and selectivity limit their wide application. Herein, one simplest Aurivillius oxide, Bi2MoO6 microspheres and a series of exfoliated g-C3N4/Bi2MoO6 hetero-composites were developed using a facile solvothermal route, which are used to detect trimethylamine (TMA, a volatile biomarker of fish freshness) at 22 °C. The introduction of E-g-C3N4 contributes to modulating the grain size of Bi2MoO6 and tuning the Bi/Mo cations valence states, thus improving the surface reactivity and electron transfer efficiency. Benefiting from the synergetic engineering of 2D/3D micro-nanostructure, crystal defects, and well-defined n-n heterojunctions, 1 wt% E-g-C3N4/Bi2MoO6 attained superior TMA sensing performance at 22 °C, including the highest response (Ra/Rg = 10.6 @ 20 ppm) and accelerated response/recovery speed, fine selectivity, and low detection limit (1.3 ppm), which is far satisfied with the detection requirement. Furthermore, the comprehensive evaluation based on the fish color and tissue state, sensing characteristics, PCA, and pH testing results reveal the fabricated TMA sensor can achieve rapid and non-destructive fish freshness detection. This work provides insights into designing low-power consumption chemiresistive gas sensors and devices with valid practicality.

THE EFFECT OF DIFFERENT REARING CONTAINERS COLORS ON THE COLOR BRIGHTNESS OF THE BARBIR FISH (Puntius conchonius)

This study aims to to determine the container color that is effective in increasing the brightness of the color of Barbir fish (Puntius conchonius). The research was carried out from June to August 2022 at the Aquatic Animal Physiology Laboratory of the Faculty of Fisheries and Marine Sciences, Padjadjaran University. This study used a complete randomized block design (RAL) experimental method with five treatments and three replications. The treatment consisted of five treatments namely control A (colorless container), blue container (B), yellow (C), Green (D) and orange (E). The treatment is given for 60 days. Parameters observed include absolute length and weight growth, color brightness, survival rate and water quality (temperature, DO and pH). The results showed that the growth parameters with the highest value obtained in the orange background color treatment (treatment E, including the growth of absolute length of 0,27 ± 0,076 cm and the growth of absolute weight of 0,12 ± 0,014 g, as well as parameters of color brightness with an increase in color score in Toca color finder (TCF) reached 1.5 on the body; 1,8 on the serip chest; and 1,6 on the tail. The value of water quality parameters are in normal conditions (temperature ranges from 24,2-28oC; DO ranges from 5,8-8,5 mg/l; and pH ranges from 6,89-7,62) so that both the survival rate of Barbir fish that is equal to 100%.Keywords: Puntius conchonius, container, background color, color brightness level, Orange

Not so monochromatic: Size-dependency of both sex and color in the cleaner wrasse Labroides dimidiatus

In marine interspecific cleaning mutualisms, small fish known as “cleaners” inspect the surface, gills and sometimes the mouth of “client” reef fish, eating ectoparasites, mucus, scales and dead or infected tissue. These cleaner fish species share similar vivid coloration that makes them recognizable by clients. To gain insight on additional communication roles of cleaner fish color, we tested if differences in color among cleaner wrasse Labroides dimidiatus individuals captured from the wild are explained by sex, body size or parasite loads. We found that males were larger, heavier and tended to have more saturated blue tails than females. We also found blue color saturation to be positively correlated with size, and that this size-dependence explains the trend for the sexes to differ in color. Parasite loads did not predict individual differences in color, but fish in our sample were not heavily parasitized. Other color traits (including yellow color saturation and black color brightness) did not differ between the sexes and were associated with morphological differences. Size-dependence of blue color may thus suggest that it is a condition-dependent signal that could be used in various types of inter- and intraspecific social interactions.

Diverse Levels of Amaranthus dubiusleaves on Growth and Carotenoid Improvements in Fresh Water Ornamental Fish Peacock Cichlid (Aulonocara hansbaenschi)

Attractive coloration and growth of ornamental fishes are important quality criteria in the aquarium fish industry. Colour-producing carotenoids cannot be synthesized by ornamental fish, so they must rely on dietary carotenoids in natural or synthetic forms to achieve their color pigmentations. The aim of this review is to compileand summarize recent investigations into different carotenoid sources used in ornamental fish feed formulations and to highlight the research gaps and investigation needs in the field of aquaculture. An attempt has been made to evaluate the effects of diets containing 0%, 2.5%, 5%, 7.5%, 10% Amaranthus dub the growth and carotenoid changes in peacock cichlid (Aulnocara hansbaenschi).This isonitrous (40% protein) diet supplemented with Amaranthus dubius leaves diet was prepared and offered ad libitum to the experimental fish in 5% body weight for 45 days. The results indicated that in the skin and muscle tissue of experimental fish, the growth and carotenoid contents were found to vary between control diets and also during the time intervals of experimental period. The results indicated that incorporation of 10% diet A. dubiusleaves in the diet was found to enhance the growth and coloration of peacock cichlid’s (Aulnocara hansbaenschi). This is considered the optimum dietary level to enhance feed intake growth and coloration.

Increased Color Brightness with the Addition of Astaxanthin in Koi Fish (Cyprinus Rubrofuscus) Feed

Introduction: This research was conducted experimentally from May to July 2021 at the Teaching Factory Cultivation Laboratory (TEFA) of the Jakarta Fisheries Business Specialist Polytechnic. This study aims to determine the effect of astaxanthin feeding on increasing color, survival and growth of koi fish. Method: The research method used is quantitative. The design used was a completely randomized design (CRD) with four treatment levels and three replications. Analysis of variance used was analysis of variance (ANOVA. Results: The results showed that the addition of astaxanthin to feed had a significant effect on changes in the color quality of koi fish. The best result was the addition of astaxanthin 125 mg/kg feed (20.29 ± average weight measurement results) (ABW) at the end of the study obtained the highest value in treatment A (control) of 10.37 g. The results of the average weight measurement (ABW) at the end of the study obtained the highest value in treatment A (control) of 10.37 g, Specific Growth Rate (SGR) was the highest in treatment A (control) of 12.00%, the best Feed Conversion Ratio (FCR) was in the treatment with the addition of 100 mg astaxanthin 1.12. Conclusion: The use of astaxanthin in koi fish feed can increase the selling value of koi fish in the market because of the bright color is one of the important criteria in assessing the quality of koi fish. Koi fish farmers can consider adding astaxanthin and need to pay attention to the right dosage.

Enhancement of body coloration of sword-tail fish (Xiphophorus helleri): Plant-derived bio-resources could be converted into a potential dietary carotenoid supplement

The effects of natural plant-derived carotenoid sources on body coloration and growth performance of Sword-Tail Fish (Xiphophorus helleri) were investigated using four different dietary treatments; Commercial Feed (CF), China Rose Flower (CRF), Marigold Flower (MFF), and Carrot (CAF). CF was used as the control treatment without a natural source of carotenoids. The sources were mixed with feed (15 g/100 g) during the diet preparation. Fish were fed with four treatments twice a day for eight weeks, and then sampling was done weekly. A total of 96 fish were used for the experiment, and the mean initial weights were 3.314 g. MFF-treated fishes showed better growth performance in terms of mean weight, length and Specific Growth Rate (SGR), and carotenoid gain than the other treatments. The lowest Food Conversion Ratio (FCR) was also observed in the MFF-treated fish. The study suggested that marigold flower mixed feed could increase the body coloration and boost the growth performance of sword-tail fish and may be manufactured.

Neuronal responses of melanin-concentrating hormone and corticotropin-releasing hormone to background color in the self-fertilizing fish, Kryptolebias marmoratus.

We examined neuronal responses of hypothalamic melanin-concentrating hormone (MCH) and corticotropin-releasing hormone (CRH) to background color in the self-fertilizing fish, Kryptolebias marmoratus. Fish were individually reared in lidless white or black cylindrical plastic containers for 15days. The number of MCH-immunoreactive (ir) cell bodies in the nucleus lateralis tuberis (NLT) of the hypothalamus was significantly greater in the white-acclimated fish, while no significant differences were observed in the nucleus anterior tuberis (NAT) of the hypothalamus. Significant differences were not seen in the number of CRH-ir cell bodies in the NLT between the groups. The body of the white- and black-acclimated fish appeared lighter and darker, respectively, compared with the baseline color. In the black-acclimated fish, feeding activity was significantly greater with a tendency toward higher specific growth rate compared with the observations in white-acclimated fish. No significant inter-group cortisol level differences were observed. These results indicate that background color affects MCH neuronal activity in the NLT as well as body color adaptation but does not affect CRH neuronal activity in K. marmoratus.

PRODUCTION OF DRIED NATURAL FEED (Daphnia magna) WITH COMBINATION OF CAROPHYLL FOR FRESHWATER ORNAMENTAL FISH

Feed is an important factor in fish rearing. Basically, the feed given must be easily digested and have high nutrition. In fish farming, especially ornamental fish, natural feed is one of the supporting factors in the success of ornamental fish farming. Daphnia magna is one of the commonly used natural feeds for freshwater fish. Additives in the form of carophyll have the main composition of synthetic coloring materials, which are dominated by free astaxanthin (free astaxanthin) which can improve the quality of color in freshwater ornamental fish. The main parameters observed were natural food culture techniques, harvest and post-harvest, Damoph production process and the effectiveness of Dampoh on improving the color quality of freshwater ornamental fish. Based on observations made every week for approximately 2 months, the color brightness level of Albino Full Red guppies is getting brighter.

Past and Present Environmental Factors Differentially Influence Genetic and Morphological Traits of Italian Barbels (Pisces: Cyprinidae)

Local adaptation and phenotypic plasticity can lead to environment-related morphological and genetic variations in freshwater fish. Studying the responses of fish to environmental changes is crucial to understand their vulnerability to human-induced changes. Here, we used a latitudinal gradient as a proxy for past and present environmental factors and tested its influences on both genetic and morphological patterns. We selected as a suitable biogeographic model, the barbels, which inhabit 17 Adriatic basins of the central-southern Italian Peninsula, and explored association among attributes from genetic, morphological, and environmental analyses. The analysis of the mitochondrial DNA control region evidenced a southward significant increase in the number of private haplotypes, supporting the isolation of the southernmost populations related to the Mio-Pleistocene events. In contrast, morphology was mainly affected by changes in the present environmental conditions. Particularly, the number of scales and fish coloration were clearly associated to latitude, and thus thermal and hydrological conditions. Other morphometric and functional traits varied under the selective pressure of other environmental factors like elevation and distance from headwater. These results highlight the sensitivity of barbels to climate changes, which can serve as a basis for future eco-evolutionary and conservation studies.

Enhancement of Color Brightness on Clown Fish (Amphiprion percula) With Addition of Tomato Powder Extract

The prospect of clown fish cultivation business is still being expanded to make profitable business activities and increasingly attract ornamental fish lovers. However, it is difficult to get clown fish with a good level of color brightness. So it can reduce the level of sales production. This study aims to determine the effect of the addition of tomato powder to increase the brightness of the color clown fish at the Ambon Marine Aquaculture Fisheries Center. The research was conducted from March to June 2020 at the Ambon Marine Aquaculture Fisheries Center. This study used a Completely Randomized Design (RAL) with 4 treatments and 3 replications. The treatment is to mix tomato powder in the feed with a concentration of 0 mg/gr (Treatment A), concentration 20 mg/gr (Treatment B), concentration 40 mg/gr (Treatment C), and concentration 60 mg/gr (Treatment D). The fish used is a clown fish with a size of 1 cm with a spread of 4 fish with a circulatory maintenance system. The observed parameters include the brightness of the clown fish color, which is measured using the color grab camera app, the growth of which is the average length and weight of average seeds measured using a ruler with a precision rate of 1 cm and a digital scale with a precision rate of 0.01gr and survival rate. The results showed that feeding with the addition of powdered tomato did not give a significant effect to increase the brightness of the color of the clown fish. However, it affects the growth (length and weight) and survival rate of clownfish seeds.

Growth Response and Color Brightening Enhancement of Cupang Fish (Betta sp.) Fed Yellow Pumpkin Extract (Cucurbita moscheta durch)

This study aims to determine the effect of treatment on increasing the brightness of the color of ornamental fish (Betta Sp) during the feeding period and the growth response of toman fish during treatment. The treatment was pumpkin extract (Cucurbita moschetta Durch) mixed into pellet feed with various combinations. The color in fish is determined by connective tissue in the epidermis, which is the availability of pigments from pellets that can be bound and absorbed by the fish’s body. This research was carried out from August to October 2022 in the Laboratorium of Aquaculture. This study is an experimental method with a completely randomized design (CRD) with each treatment as follows, 10ml/100gr,20ml/100gr, and 30ml/100gr feed for 60 days. The results showed that adding pumpkin extract of 30ml/100gr could increase the color brightness of ornamental fish. Based on the results of the variance test, it showed a significant level of significant effect.

STUDI KOMPARASI PENGGUNAAN SIMPLISIA DAUN MANGGA DAN DAUN SIRIH UNTUK MEMPERPANJANG MASA SIMPAN IKAN PADA PENGEWETAN MENGGUNAKAN ES

Traditional fishermen in fishing operations use equipment that is still simple with preservatives in the form of ice cubes which can only prevent damage to fish for 2-3 days. The purpose of the study was to find out how to use mango leaves as an additional ingredient in the process of preserving fish by cooling using ice and the effectiveness of using mango leaves compared to betel leaves as a positive control in maintaining the freshness of fish quality. Collecting data using sensory test, ALT Aerob analysis test, TVB-N analysis test and E. coli analysis test. The use of mango leaves for simple fish preservation can be done by traditional fishermen by making simplicia through the process of cutting, drying and grinding. Based on the sensory test, it was found that the use of mango leaf simplicia was able to maintain the freshness and durability of fish products caught by fishermen, much better than the use of ordinary ice because the value of F F crit and 0.05. Based on the analysis of the BNT/LSD test, it is known that there is a significant difference between the use of mango leaves which is much better than the use of betel leaves for eye brightness parameters, but there is no significant difference between the use of mango leaves and betel leaves for scale color parameters and fish aroma. Aerobic ALT analysis found levels of 5,113 colonies/gram which was still relatively good because it was below 500,000 colonies/gram. TVB-N analysis obtained levels of 27.77 mg/100 grams which are still categorized as suitable for consumption because they are below 30 mg/100 grams. Meanwhile, E. coli levels were below 3 APM/gram. So that the addition of mango leaf simplicia has a real effect in maintaining the freshness and quality of fish in preservation using ice.

The Effects of Different Dosages of Pasak Bumi (Eurycoma longifolia Jack) towards The Sex of Betta Fish Embryo

Betta fish (Betta splendens) is one of the ornamental fish that is in demand by the public because it has aesthetic value and high economic value. The attractive body color of male betta fish with long fins causes this fish to be more attractive to the public compared to female betta fish. Male betta fish have the prospect of being monosexually cultured which can be done by masculinization method. The purpose of the study was to determine the effect of pasak bumi extract on the percentage of male sex ratio, hatchability and survival rate of larvae. The masculinization method is an engineering technique of administering steroid hormones that can increase the male sex ratio with using natural materials that are environmentally friendly such as pasak bumi (Eurycoma longifolia, Jack). Pasak Bumi contains phytosterol compounds so it can be used as a natural ingredient in masculinization applications. The research was conducted at the Laboratory of Aquaculture Study Program, Faculty of Agriculture, Asahan University using Completely Randomized Design 5 (five) treatments and 5 (five) replications with dose pasak bumi extract is 0 mg/L; 1 mg/L; 2 mg/L; 3 mg/L and 4 mg/L. The treatment was given by soaking betta fish embryos in the Morula phase, which is about 2 (two) hours after fertilization. The results of the study show that concentration pasak bumi 3 mg/L resulted in the highest percentage of males from all treatments, which was 76.50%. The percentage of hatchability for all treatments is 100% However, the highest survival rate was found indose 4 mg/L by 65%. The research results also show found fish intersex in the treatment of 2 mg/L of 0,40% and 4 mg/L by 0,25%. Water quality during the study in the form of temperature ranged from 24.5-26.7°C; pH 5.8 – 7.1 and DO 3.5 – 4.7 mg/l.

Effective valorization of precision output of algaquaculture towards eco-sustainability and bioeconomy concomitant with biotechnological advances: An innovative concept

Both input resources and ecosystem stability are critical to the long-term viability and sustainability of the aquaculture business, which is booming while supporting global food security. Over the past few decades, technical advancements have been made to help achieve both economic and environmental goals. Among these, “algaquaculture,” which combines algae culture with aquaculture, is seen as a revolutionary concept with numerous advantages. The only difference between this system and aquaponics is that algae are used instead of leafy plants. In aquaponic systems, this integration is innovative because of algae’s superior ability to utilize waste-derived nutrients, such as nitrate, nitrite, and total ammonia nitrogen (TAN). An additional benefit of algae is that they promote growth, stimulate the immune system, and even enhance the color of fish. Some algae with human health benefits and biodiesel sources have a high market price, which can be used to compensate for an integrated aquaculture-based system’s higher economic value. While aquaculture waste bioremediation can greatly improve environmental sustainability, it is important to note that algae can play a significant part in bioremediation because of their ability to minimize environmental disruptions. This review aims to highlight the new concept of algaquaculture, functional role of algae in aquaculture, and biotechnological advancements for the bioeconomy to establish microalgae-based food production systems, including aquaculture, by citing the role and benefits of such an integrated algal-aquaculture system. For this reason, the review intends to disseminate an idea like this over the globe, focusing on how to preserve the sector in the coming years. • Algaquaculture, which combines algae culture with aquaculture, is seen as a revolutionary concept with numerous advantages. • Algaquaculture has great impact on circular and bioeconomy. • The biotechnological advances makes algaquaculture a sustainable strategy for frontiers industrial applications.

Development of Ornamental Fish Cultivation to Support Fisheries Tourism In The Sari Nadi Group, Marga District, Tabanan, Bali

Koi fish (Cyprinus carpio) is one of the ornamental fish that has a beautiful body shape and color so it has high economic value. Indicators of beauty in ornamental fish can be seen in the brilliant color, physical shape and completeness, behavior, and health conditions or stamina. These koi fish are often used as aquarium decorations and are art consumption for enthusiasts. The beauty of the color of Koi fish is in demand by the community so that farmers need to maintain the color of ornamental fish by providing feed that contains color pigments. Carotenoids are the main natural components that make up color pigments, which have a good effect on red and orange colors. Sources of carotenoids can come from spirulina which contains phycocyanin, chlorophyll-a, and carotene. Carotene is composed of xantophyll (37%), carotene (28%), and zeaxanthin (17%). Providing a source of color pigment in fish feed is one of the efforts made to get a bright color that is evenly distributed in fish. Feeding containing 8% spirulina was effective in increasing color pigmentation in the red swordtail (Xiphophorus helleri). The addition of 1.2% spirulina flour to artificial feed gave a very significant effect on increasing color intensity and was the highest result in increasing color intensity of Koi fish.

Efektivitas Pemberian Tepung Cacing Sutra (Tubifex Sp) dalam Pakan Terhadap Performa dan Kelangsungan Hidup Benih Ikan Komet (Carassius auratus)

Comet goldfish (Carassius auratus) is a type of freshwater ornamental fish that is popular among the public and has the main advantage of having lots of color variations. The use of fish meal is the biggest obstacle causing the high price of feed and affecting the production of comet fish. The new alternative material to replace fish meal is silk worm flour (Tubifex sp). The aim of this study was to determine the effectiveness of feeding silkworm meal on the performance and survival of comet fish (C. auratus) fry. This research was carried out in February-March 2021 at Perum Yeyes Lestari, Kenali Besar Village, Alam Barajo District, Jambi City for 40 days. The experimental design used in this study was a completely randomized design with 4 treatments and 3 replications, the treatments included 15% silk worm flour (A), 20% silk worm flour (B), 25% silk worm flour (C) 30% silk worm flour (D). The test fish used were comet fish measuring 3-5 cm as many as 120 fish. The results showed that temperature had an effect on survival, absolute weight growth and feed conversion. The color of comet fish for all treatments at the beginning of the study ranged from 3.90-4.43 (golden yellow), while at the end of the study there was a color change that ranged from -2.14-2.83 (dark red). The highest SR was found in treatment A of 86.67% followed by treatment B 70.00% and treatment D 56.67%. The highest PBM value was found in treatment C of 3.26 g. The best FCR value was found in treatment C of 3.56. The results of the analysis of water quality showed that the condition of the culture media was still quite feasible for the maintenance of comet fish in the aquarium container.