Fish Of Family Cyprinidae Research Articles

Osteological Features of Pelvic Girdle and Pelvic Fin in Cyprinid Fishes from Northern Western Ghats, India

Osteology of pelvic girdle was studied in fishes of family Cyprinidae from Northern Western Ghats, India. Osteology from members of Subfamily- Labeoninae- tribe Garrini, Subfamily Smiliogastrinae, Family Danionidae, Family- Danionidae- Subfamily Danioninae and Family Danionidae- Subfamily Rasborinae was studied. Cleared and stained specimens were observed for variations in pelvic girdle and pelvic fins.

Comparative phylogeny of (Schizothorax esocinus) with reference to 12s and 16 sribosomal RNA from River Swat, Pakistan

Schizothorax esocinus is one of the important cold water delicious fish belonging to family Cyprinidae and found in River Swat which is one of the main river flowing in Khyber Pakhtunkhwa, Pakistan.The complete mitochondrial genomes of the S. esocinus species was found to be 16,591bp. Phylogenetic analysis of S. esocinus based on 12 s ribosomal RNA and 16S rRNA confirmed that, the phylogenetic position of S. esocinus was slightly different, but clustered closed to S. plagiostomus, S. labiatus, S. richardsonii, S. nepalensis, and S. progastus predicting a close homology in genome and hence a monophyletic line of evolution also this specie showed close relationship and homologs to the Aspiorhynchus laticeps, Spinibarbus sinensis, Aspiorhynchus laticeps, and Percocypris respectively. This study provided phylogenetic relationship between Schizothoracinae fishes and with the other fishes of family cyprinidae even at the subfamily level.

Efficiency of a modified Ice Harbor-type fishway for Korean freshwater fishes passing a weir in South Korea

The effectiveness of a modified Ice Harbor-type fishway on the Geum River in South Korea was investigated for native freshwater fishes, using trap and passive integrated transponder (PIT) telemetry. The traps were installed at the exit part of the fishway, and fish use was monitored monthly from June to October 2012. Fishes were caught by a cast net and a fyke net at the lower part of the Gongju weir for PIT tagging. The tagged fishes were released downstream of the fishway. Three antenna lines (entrance, middle, and exit) were installed along the 70-m stretch of the fishway to investigate fish passage. A total of 1114 individuals, classified into 21 species and 4 families, were collected by the traps, with fishes of family Cyprinidae being dominant. The total length (TL) of fishes collected by the traps ranged from 40 mm (Rhinogobius brunneus) to 504 mm (Erythroculter erythropterus), with a mean of 161.3 ± 82.3 mm. The overall attraction and passing rate of the fishway were 15.3 and 43.2 %, respectively. TL had no effect on the attraction and passing rate of tagged fishes. Even though some Cyprinidae species required >6 h to move through the fishway, most fishes passed through within 6 h. Most fish detections occurred when the water level in the fishway exceeded the management level. To our knowledge, this study is the first to investigate the use of a fishway by Korean freshwater fishes, demonstrating the high use of a modified Ice Harbor-type fishway. To confirm whether this type of fishway is ideal for Korean freshwater fishes, other fishways must be evaluated. Such research would contribute towards the development of optimal fishways for this location and towards the establishment of operational strategies that facilitate the passage of more fishes.

Fish Diversity of River Siyom of Arunachal Pradesh India: A Case Study

Arunachal Pradesh being rich in fishery resources biophysically, the status of the fish diversity is not known from all the water bodies. A case study was undertaken in the river Siyom (28°11′25′′-28°10′52′′N and 94°45′17′′-97°47′51′′E) of West Siang district, Arunachal Pradesh from 2002 to 2004 with the fragmentary work till 2007. For the purpose, sampling of fish was done from the river time to time using local contraption along with modern nets. A total of 44 species of fishes belongs to 9 families were identified. Fishes of family Cyprinidae were found to be dominant followed by Balitoridae. Some of the fish species were found very rare in the river, which may be due to various anthropogenic factors. Therefore, in addition to social restriction on community fishing some awareness measures need to be taken to prevent the destructive fishing activities in the river.DOI: 10.3126/on.v8i1.4324