Fundulopanchax

The steel-blue killifish, Fundulopanchax gardneri, is native to the Cross River system in Nigeria and Cameroon and the Benue River drainage. Also known as Gardner's killi or blue lyretail, the common aquarium forms are among the best choices for those new to killifishes. Wild populations come in numerous colour forms, three of them described as subspecies. Its eggs can withstand a period of drying but will also hatch when kept submerged.

Fundulopanchax gresensi is a killifish known only from a small area in the upper Cross River basin, western Cameroon. It has been collected from shallow, swampy sections of forested streams, some of which may dry out in the dry season. The commonest hobby strain is known as 'Takwai'. It jumps well, so the aquarium needs a good cover.

The marbled lyretail, Fundulopanchax marmoratus, is a rare killifish endemic to Cameroon, found in a single area of coastal rainforest. It inhabits small streams and ponds and occurs only in permanent water, so it is not an annual species. It needs cooler temperatures than most killifishes and is best kept in a species tank.

Fundulopanchax scheeli is a killifish from Cameroon and Nigeria, living in small streams and ponds in a few areas of coastal rainforest. It occurs only in permanent water and is not an annual species. Very peaceful and shy, it is easily outcompeted by more vigorous fish and needs carefully chosen tankmates.

The golden pheasant, Fundulopanchax sjoestedti, is a large killifish from Nigeria and Cameroon, reaching 12 cm, found in swampy coastal rainforest. Adult males are admired for their colouration. It was formerly classified as Aphyosemion sjoestedti, and much of the literature still uses that name. Several colour forms exist, including a smaller variety known as 'Dwarf Red'. Males are aggressive towards one another.

Fundulopanchax walkeri is a predatory killifish from the Ivory Coast and Ghana. It lives in small streams, swamps and ponds in coastal rainforest and forested savanna, and occurs as both an annual and a non-annual fish, so it can breed in permanent and temporary water. It needs cooler water than many killifishes, and will eat any fish that fits in its mouth. Some wild populations are threatened or extinct through rapid human development.