Mandarin fishes (Sinipercidae) are piscivores that feed solely on live fry. Unlike higher vertebrates, teleosts exhibit feeding behavior driven mainly by genetic responses, with no modification by learning from parents. Mandarin fishes could serve as excellent model organisms for studying feeding behavior. We report a long-read, chromosomal-scale genome assembly for Siniperca chuatsi and genome assemblies for Siniperca kneri, Siniperca scherzeri and Coreoperca whiteheadi. Positive selection analysis revealed rapid adaptive evolution of genes related to predatory feeding/aggression, growth, pyloric caeca and euryhalinity. Very few gill rakers are observed in mandarin fishes; analogously, we found that zebrafish deficient in edar had a gill raker loss phenotype and a more predatory habit, with reduced intake of zooplankton but increased intake of prey fish. Higher expression of bmp4, which could inhibit edar expression and gill raker development through binding of a Xvent-1 site upstream of edar, may cause predatory feeding in Siniperca.

鱼（Sinipercidae）是只食活鱼的食肉动物。与高等脊椎动物不同，硬骨鱼类表现出主要由遗传反应驱动的取食行为，而没有从父母的学习中得到改变。鱼可以作为研究摄食行为的优良模式生物。我们报告了Siniperca chuatsi和Siniperca kneri，Siniperca scherzeri和Coreoperca whiteheadi的基因组程序集的长期阅读，染色体规模的基因组程序集。阳性选择分析显示与掠食性进食/侵略，生长，幽门盲肠和欧洲盐度相关的基因快速适应性进化。在man鱼中很少观察到g耙；类似地，我们发现斑马鱼缺乏埃达（Edar）有g虫耙损失表型，并且有更多的掠食性习惯，浮游动物的摄入减少，但pre鱼的摄入增加。的更高表达BMP4，这可能会抑制EDAR通过的Xvent-1位点上游的结合表达和鳃耙发展EDAR，也可以在使掠夺馈送翘。