👉 Cypselidae are a group of crustaceans, including the common carp (Cyprinus carpio) and the carp (Hippocampus). These animals belong to the family Cyprinidae, which also includes other aquatic animals like the carp. They have a wide range of adaptations for survival in their aquatic environment, including their streamlined bodies, short gills, and long, flexible tails that allow them to swim efficiently.