In this study, we describe the morphological development of laboratory-reared black sharkminnow Labeo chrysophekadion larvae and juveniles. The body lengths (BL) were 3.4 ± 0.1 (mean ± SD) mm just after hatching, reached 7.2 ± 0.6 mm by day 11, 13.6 ± 1.7 mm by day 25 and 18.5 ± 2.2 mm by day 40. The onset of feeding was observed on day 3, and all larvae began feeding by day 5 (ca. 5.3 mm BL). The yolk was completely absorbed by ca. 97 hours (day 3) after hatching and notochord flexion was observed on day 5 (ca. 5.3 mm BL). The second maxillary barbel in flexion larvae with > 6.9 mm BL started developing on day 11 and the first barbel in flexion larvae with > 9.0 mm BL on day 16. The body proportions tended to become constant in the juvenile stage except for the maximum body depth that increased continuously. Fin rays started appearing in caudal fin in flexion larvae > 5.3 mm BL followed by dorsal, anal, pectoral and pelvic fins, and aggregate fin-ray numbers attained full complements in specimens > 14.1 mm BL on day 30. Few melanophores were observed on the body during days 0–2, but increased with growth and covered the entire dorsal body surface during the juvenile stage.

在这项研究中，我们描述了实验室饲养的黑鲨小黑猩猩Labeo chrysophekadion幼虫和幼虫的形态学发展。体长（BL）为3.4±0.1（平均±  SD）刚孵化后的毫米，到第11天时达到7.2±0.6毫米，到第25天时达到13.6±1.7毫米，到第40天时达到18.5±2.2毫米。在第3天观察到开始摄食，所有幼虫在第5天开始摄食（约5.3毫米BL）。卵黄完全被约克吸收。孵化后97小时（第3天），第5天（约5.3 mm BL）观察到脊索弯曲。BL≥6.9 mm的幼虫的第二个上颌杠铃虫在第11天开始发育，BL≥9.0 mm的幼虫的第一个上颌杠铃虫在第16天开始发育。除了最大身体深度外，在幼年阶段体重比例趋于恒定。不断增加。BL> 5.3 mm的弯曲幼虫的尾鳍开始出现鳍射线，其次是背鳍，肛门鳍，胸鳍和骨盆鳍，总鳍鳍数量在> 14的标本中达到了完全互补。