To identify the hereditable stability of morphological characteristics in hybrids, qualitative and quantitative traits were compared amongst Ctenopharyngodon idella(F0), Squaliobarbus Curriculus(F0), hybrids(C. idella(♀) × Squaliobarbus Curriculus(♂), F1), backcrosses(F1×C. idella(♂), F2) and backcrosses(F1×S. Curriculus(♂), F2). The results showed the growth performance of backcrosses were significantly higher than that of the parents. And the head shape and eye color of backcrosses were similar with F0 and F1, respect...