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Habitat, Reproduction and Feeding Habit of Endangered Fish Koreocobitis naktongensis (Cobitidae) in the Jaho Stream, Korea  

Hong, Yang-Ki (Department of Marine Biotechnology, Soonchunhyang University)
Yang, Hyun (Institute of Biodiversity Research)
Bang, In-Chul (Department of Marine Biotechnology, Soonchunhyang University)
Publication Information
Korean Journal of Ichthyology / v.23, no.3, 2011 , pp. 234-241 More about this Journal
Abstract
Habitat, reproduction and feeding habit of endangered fish Koreocobitis naktongensis from Jaho stream, Gyeongsangbuk-do, Korea were investigated from March 2010 to June 2011. This species inhabits at the upper and middle parts of stream, which were composed of cobbles and pebbles bottom. The current velocities in these microhabitat were 5~10 cm/sec and depth were 50~110cm. The sex ratio of female to male was 1 : 0.92. It is presumed that the spawning season is from May to June when water temperatures were 17 ~ 20$^{\circ}C$. The average number of mature eggs in ovary were about 22,643 (15,909~30,323), mean egg diameter was 0.87${\pm}$0.05mm. K. naktongensis fed mainly on Chironomidae (IRI, 72.0%) and Ephydridae (26.9%) of Diptera.
Keywords
Koreocobitis naktongensis; Jaho Stream; endangered fish; habitat; spawning season; feeding habit;
Citations & Related Records
Times Cited By KSCI : 9  (Citation Analysis)
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