It is commonly believed that hybridization might lead to the formation of new polyploidy
species, but it is unclear whether hybridization can produce a new homodiploid species.
Here, we report the spontaneous occurrence of a new crucian carp-like homodiploid fish
(2n= 100) that originated from the interspecific hybridization of female common carp
(Cyprinus carpio, Cyprininae, 2n= 100)× male blunt snout bream (Megalobrama
amblycephala, Cultrinae, 2n= 48). The phenotype and reproductive traits of this new crucian …