Vesijadidae

Vesijadidae is a family of small, freshwater fish belonging to the order Cyprinodontiformes. They are native to the Americas, with the majority of species found in Mexico and Central America. Vesijadidae are known for their unique reproductive behavior, where males carry the eggs on their fins until they hatch. This family includes around 15 species, which are typically small, with most species reaching lengths of less than 5 centimeters.

The family name Vesijadidae is derived from the genus Vesicomyidae, which was later found to be a junior synonym of Vesijadidae. The family is further divided into two subfamilies: Vesijadinae and Cyprinodontinae. Vesijadinae includes the type genus Vesijadidae, while Cyprinodontinae includes the genera Cyprinodon and Fundulus.

Vesijadidae are often found in temporary or permanent freshwater habitats, including streams, rivers, and ponds. They are omnivorous, feeding on a variety of small invertebrates and plant material. Due to their small size and unique reproductive behavior, Vesijadidae are of interest to both scientific researchers and aquarium enthusiasts. However, some species are threatened by habitat loss and pollution, highlighting the need for conservation efforts.