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Eggs Development and Early Life History of Pale Chub, Zacco platypus from Wicheon  

Park, Jae-Min (Gyeongsangbuk-Do Native Fish Business Center)
Han, Kyeong Ho (Marine Technology Undergraduate, Chonnam National University)
Publication Information
Korean Journal of Ichthyology / v.29, no.3, 2017 , pp. 190-196 More about this Journal
Abstract
The egg and larval development of pale chub, Zacco platypus were determined by observation of laboratory reared larvae from hatching. The experimental adult fish were collected in Wicheon of Nakdong river in June 2016, The eggs and larvae were reared in the experimental tanks, and observed their morphological change. The egg diameter ranged from 1.68 to 1.78 mm ($mean{\pm}SD$, $1.73{\pm}0.07mm$, n =30). The eggs were hatch 70 hours after fertilization. The total length (TL) of the newly hatched larvae ranged from 5.39 to 5.42 mm ($5.40{\pm}0.02mm$, n=10). On the 8 days after hatching, 10 fin rays were formed in caudal fin at 7.89~7.93 mm TL ($7.91{\pm}0.02mm$, n=10). On the 44 days after hatching, the juveniles ranged from 16.1~16.5 mm TL ($16.3{\pm}0.28mm$, n=10).
Keywords
Egg development; juvenile; larvae; pale chub; Zacco platypus;
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