Abstract
Betta fish is one of the ornamental fish that has high economic value because it has features such as the beauty of the body color, the uniqueness of the shape of the fins so that it is very attractive to ornamental fish lovers. Attractiveness value of ornamental fish can be measured from their brilliant color, shape and physical completeness, behavior, and health conditions. Color is one deciding factor that ornamental fish is in demand by consumers, so that farmers need to maintain the color of ornamental fish by providing food containing color pigments. The aim of this study was to obtain a mixture of effective doses of pro-enzyme Spirulina flour in feeding to increase growth and color intensity of betta fish. The results showed that the highest absolute weight growth was found in treatment B (5 grams) of pro-enzyme Spirulina flour 2.154 followed by treatment C 1.554 (7 grams), treatment A 0.844 (3 grams), and treatment D 0.002 (0 grams). The highest level of color change occurred in treatment A (dose of 3 grams) while the lowest color change rate was found at treatment D (0 grams).
Highlights
IntroductionBetta fish is a species of popular freshwater ornamental fish that commonly loved by ornamental fish community
The results showed that the highest absolute weight growth was found in treatment B (5 grams) of proenzyme Spirulina flour 2.154 followed by treatment C 1.554 (7 grams), treatment A 0.844 (3 grams), and treatment D 0.002 (0 grams)
The highest level of color change occurred in treatment A while the lowest color change rate was found at treatment D (0 grams)
Summary
Betta fish is a species of popular freshwater ornamental fish that commonly loved by ornamental fish community. Culture of betta fish is developing quite rapidly because they are easy to maintain. These ornamental fish enthusiasts prefer male than female because male fish have aesthetic value and color that are nicer and more attractive and have higher profits [1]. Betta fish have many body forms, especially in the shape of the tail, such as the type of crown (crown tail), full tail and slayer. These ornamental fish have price differences between male and female fish. There are more male fish enthusiasts, so it is more effective and profitable if only the male is produced and maintained [3]
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