Definition: Adelphydraena is a genus of fish that belongs to the family Cyprinidae, commonly known as carp or carp. These fish are known for their large size and colorful scales, which they use to camouflage themselves in aquatic environments. The genus includes species like Adelphydraena pteronotus, Adelphydraena leucogaster, and Adelphydraena ocellata, among others.