Sex discrimination based on morphological traits in Mystus mysticetus Roberts, 1992

This study supplemented the way of sex determination fish based on regression relationship some morphological indicators Mystus mysticetus. A total 425 specimens were collected by trawl nets at Cai Rang - Can Tho and Long Phu Soc Trang from January to July 2022. After collection, transferred laboratory determine their length (TL), standard (SL), eye diameter (ED), distance (DE), body height (BD), head (HL), mouth width (MD) before anatomy for gonads. The analysis results TL-SL, TL-ED, TL-DE, TL-BD, TL-HL, TL-MD showed that SL, DE, MD could be used this species because SL DE dominant in growth males, was prevalent females. In addition, sampling time HL distribution environment.