meristic variation.
器官
变异
；(器官)数目；(器官)
；分节，分
体节meristic variation.
器官变异
juvenile stage Young fish, fundamentally like the adult in meristic characters (excluding scalation) but smaller and reproductively inactive.
幼
期幼，基本上类似
体节特
(除了鳞片形状)但是比较小且生殖未活化。
adult Fish that have fully developed morphological and meristic characters and that have attained sexual maturity.
经完全发展而具有所有形态特个体,或指经达到性熟个体。
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