The Baja California killifish (''Fundulus lima'') is a

killifish A killifish is any of various oviparous (egg-laying) cyprinodontiform fish (including families Aplocheilidae, Cyprinodontidae, Fundulidae, Profundulidae and Valenciidae). All together, there are 1,270 species of killifish, the biggest family ...

in the family

Fundulidae Fundulidae is the family of topminnows and North American killifishes. Distribution The 46 species are native to North America as far south as Yucatan, and to the islands of Bermuda and Cuba, occurring in both freshwater and marine environments ...

. It is native to the Baja California Peninsula region of northwestern Mexico. This fish was described by L.L. Vaillant in 1894 with the type locality given as San Ignacio de Caracamande in central Baja California. The Baja California killifishes found in oases, springs, ponds, and creeks which have clear water with low salinity levels and relatively slow flows with substrates consisting of bedrock, sand, and gravel. Their diet is varied by season and is made up of

diatoms A diatom (New Latin, Neo-Latin ''diatoma''), "a cutting through, a severance", from el, διάτομος, diátomos, "cut in half, divided equally" from el, διατέμνω, diatémno, "to cut in twain". is any member of a large group com ...

, insect larvae, and fish scales during the dry season while in the rainy season it is mainly insect larvae, filamentous algae, and

ostracods Ostracods, or ostracodes, are a class of the Crustacea (class Ostracoda), sometimes known as seed shrimp. Some 70,000 species (only 13,000 of which are extant) have been identified, grouped into several orders. They are small crustaceans, typical ...

References

Baja California killifish Endemic fish of Mexico Freshwater fish of Mexico Fauna of the Baja California Peninsula Fish described in 1894 {{Cyprinodontiformes-stub