Killifishes

**Definition:** Small oviparous fishes mostly in the family Cyprinodontidae but also some members of families Aplocheilidae, Fundulidae, Profundulidae, and Rivulidae. Some killifishes are used in mosquito control. Killifishes are vertebrate model organisms in various fields, e.g., environmental toxicology and neurobiology, because of their short lifespans, ease of maintenance and large number of eggs produced.

**Tree numbers:** - B01.050.150.900.493.850.280.500