Poor man’s tropheus
The Poor man’s tropheus, Neetroplus nematopus, is a species of fish in the family Cichlidae, the only species in the genus Neetroplus. It is a small-medium sized cichlid growing to a length of 4.72 in (12 cm); it occurs in the Central American rift lakes (Lake Kiloa, Lake Managua, Lake Masaya and Lake Nicaragua) and riverine habitats on the Atlantic coasts of Costa Rica and Nicaragua. Like most Central American cichlids the species is commonly found in hard, alkaline (pH 7.5) water. Its diet consists of algae and plant material which it scrapes from rocks and other hard surfaces in a fashion similar to algal grazing cichlids of Lake Malawi, Africa. Some populations are reportedly involved in cleaning other fish of parasites. Like all cichlids, brood care is highly developed with both parents involved in fry raising. Coloration changes dramatically while breeding.