Stephanoberycoidei

Stephanoberycoidei is a small order of ray-finned fish, belonging to the superorder Stephanoberyciformes. This order is characterized by its relatively small size, with most species reaching lengths of less than 10 centimeters. The order is found in both freshwater and marine environments, with a few species inhabiting brackish waters. The most well-known family within this order is the Stephanoberycidae, which includes the genus Stephanoberyx, known for its unique reproductive strategy. Unlike many other fish, Stephanoberyx species are viviparous, giving birth to live young. This order is of particular interest to ichthyologists due to its distinct evolutionary traits and the relatively small number of species it contains. The taxonomy and biology of Stephanoberycoidei continue to be areas of active research, with ongoing studies aimed at understanding their ecological roles and evolutionary history.