Cyprinodontiformes

Cyprinodontiformes () is an order of ray-finned fish, comprising mostly small, freshwater fish. Many popular aquarium fish, such as killifish and live-bearers, are included. They are closely related to the Atheriniformes and are occasionally included with them. A colloquial term for the order as a whole is toothcarps, though they are not actually close relatives of the true carps – the latter belong to the superorder Ostariophysi, while the toothcarps are Acanthopterygii.

Fluviphylax is a genus of tiny cyprinodontiform fish native to the Amazon Basin, Orinoco Basin, and Oyapock Basin in South America.

thumb|240px|A bluefin notho killifish, Nothobranchius rachovii, from East Africa

Profundulus is a genus of fish in the family Profundulidae endemic to Mexico and northern Central America. It was regarded as the only genus in the Profundulidae but workers have split the genus and raised a second genus Tlaloc.

species of fish

species of fish

Micropoecilia is a genus of poeciliids native to fresh and brackish water from the Amazon Basin to Trinidad. While recognized as valid by FishBase, others have considered this genus as being synonymous with Poecilia.

species of fish

Cyprinodontoidei is a suborder of fishes, one of the two suborders in the order Cyprinodontiformes. The Cyprinodontoidei consists of eleven families which are found in the Americas, the Mediterranean and in Africa, including Madagascar.

species of fish

Procatopodidae, the African lampeyes, are a family of ray-finned fish in the order Cyprinodontiformes.

Aplocheiloidei is a suborder of the order Cyprinodontiformes consisting of three families which are commonly known as killifishes.

Aphaniidae, the Oriental killifishes, are a family of the order Cyprinodontiformes. The 42 extant species of the family inhabit inland waters, rivers and lagoons. The distribution of these species extends from the entire Mediterranean region throughout the neighboring states of the Red Sea and Persian Gulf to southwest India. Several species in this family have very small distributions and are seriously threatened.