Cichlasoma is a genus of fish in the cichlid family. The genus was previously very large, including cichlids from North America, including Central America, and South America.
Apistogramma is a genus of fish in the family Cichlidae found in South America. They are relatively small and belong among the dwarf cichlids. Most species are strongly sexually dimorphic, with males generally larger and differently coloured to females. In a few species this pattern is reverse. All species are micropredators. Their main prey items consist of fry of other fish, insect larvae and other invertebrates. Brood care is highly developed, as in most cichlids. Nearly all species spawn in caves, typically under rocks or in holes in sunken logs or branches. In three of the described species, A. barlowi, A. megastoma, and A. pantalone, both females and males are mouthbrooding. A number of breeding strategies exist. Some species breed in polygamous harems, while other species form monogamous pairs. In most cases, regardless of the breeding strategy, the female is more highly involved with brood care, whilst the male defends a territory from predators. The sex of the fry is affected by the water conditions, with warmer and more acid water favoring more males.
Aequidens is a genus of fish in the family Cichlidae found in South America. Formerly a wastebasket genus, as presently defined Aequidens is largely restricted to the Amazon Basin, Orinoco Basin and river basins in The Guianas. The only exceptions are A. plagiozonatus which also occurs in the Paraná Basin, and A. tetramerus which also occurs in the Parnaíba River.
Geophagus is a genus of cichlids that mainly live in South America as far south as Argentina and Uruguay, but a single species, G. crassilabris is from Panama. They are found in a wide range of freshwater habitats. They are part of a group popularly known as eartheaters and mostly feed by picking up mouthfuls of sand to sift out food items such as invertebrates, plant material and detritus. The largest species reach up to 28 cm (11 in) in standard length. They are often kept in aquariums.
Danio is a genus of small freshwater fish in the family Cyprinidae found in South and Southeast Asia, commonly kept in aquaria. They are generally characterised by a pattern of horizontal stripes, rows of spots or vertical bars. Some species have two pairs of long barbels. Species of this genus consume various small aquatic insects, crustaceans and worms.
Mikrogeophagus is a genus of small cichlids native to the Amazon and Orinoco basins in South America. Both species are popular with aquarists, especially M. ramirezi.
Australoheros is a fish genus in the cichlid family. Most are restricted to rivers and streams in southeastern Brazil, Paraguay, Uruguay and northeastern Argentina, but at least one species is also found in lakes and swamps. This genus was erected after a taxonomic revision in 2006. These are relatively small cichlids that typically do not surpass 10–15 centimetres (3.9–5.9 in) in length, although A. facetus reaches about 20 cm (7.9 in).
Bujurquina is a genus of cichlid fish endemic to South America. Most species in the genus are restricted to the western Amazon Basin. The only exceptions are B. mariae from the Orinoco Basin, and B. oenolaemus and B. vittata from the Paraguay–Paraná Basin.
Teleocichla is a genus of fish in the family Cichlidae found in the Tapajós, Xingu, Tocantins and Jari River basins, which are part of the Amazon River Basin in Brazil. All species are rheophilic, and highly elongated in shape. They generally are smaller than 9 cm (3.5 in) in length, making them some of the smallest cichlids of the Americas. Only T. preta can grow larger, reaching about 12 cm (4.7 in). Since restricted to areas with fast currents, they are particularly vulnerable to the building of dams, and the Belo Monte Dam may cause the extinction of T. centisquama. Other species recognized as threatened by Brazil's Ministry of the Environment are T. cinderella, T. prionogenys and T. wajapi.
Mesonauta, the flag cichlids, is a small genus of cichlids native to the Amazon, Orinoco, Essequibo, Paraná and Paraguay basins in South America. Mesonauta is included in the subfamily Cichlasomatinae. They occur in various freshwater habitats such as streams and lakes, especially in areas with little water movement and aquatic vegetation. They are generally found in small groups that stay near the water surface. To avoid predators, adults may jump out of the water and juveniles mimic leaves.
The Cichlasomatinae are a subfamily of cichlid fishes, including all ciclids native to the Greater Antilles, United States, Mexico and Central America, and many of the cichlids from South America. The subfamily Cichlasomatinae is often divided into two tribes: Cichlasomatini and Heroini, however some authorities classify these two tribes as part of the wider Neotropical and marginally Nearctic subfamily Cichlinae.
Andinoacara is a genus of fish in the family Cichlidae. The genus was described in 2009. Before this the members of Andinoacara were placed in the "catch-all" genus Aequidens although they are not closely related to the other members of this genus. The genus Andinoacara is restricted to freshwater habitats in northwestern South America and southern Central America. There are no members of the genus in the Amazon Basin.
Han Nijssen was a Dutch ichthyologist.
Mazarunia is a genus of cichlids from the Mazaruni River, a tributary of the Essequibo River in Guyana. They are dwarf cichlids that do not surpass 8.5 cm (3.3 in) in length.
Pethia is a genus of small freshwater fish in the family Cyprinidae native to South Asia, East Asia(only Pethia stoliczkana recorded)and Mainland Southeast Asia. Some species are commonly seen in the aquarium trade. The name Pethia is derived from the Sinhalese "pethia", a generic word used to describe any of several small species of cyprinid fishes. Members of this genus were formerly included in Puntius.
Badis is a genus of fish in the family Badidae found in South Asia, Southeast Asia and China. These species have a sharp spine on the opercle, soft and spinous parts of the dorsal fin contiguous, three spines in the anal fin, tubed pores in the lateral line, villiform teeth and a rounded caudal fin. In addition, they differ from the related genus Dario (genus) by being larger and displaying more involved parental care.
Dario is a genus of very small chameleonfishes native to streams and freshwater pools in China (Yunnan), India and Myanmar. Depending on exact species, they are up to 1.5–3 cm (0.6–1.2 in) in standard length, and reddish or brownish in colour.
Cichlastomatini is a tribe of cichlids from South America, one of two tribes that make up the subfamily Cichlasomatinae. They were recognised in 1983 as an assemblage by the Swedish ichthyologist Sven O. Kullander by their four rather than five 5 dentary foramina in the lateralis canal system of the head, describing them as closely related to the genus Cichlasoma. Melanie Stiassny suggested that these fishes recognised as a clade by Kullander were divided into two groupings in 1991 which she termed cichlasomines and heroines, Kullander formally raised these to the tribes Cichlasomatini and Heroini of the subfamily Cichlasomatinae in 1999. In other classifications the tribe Cichlasomatini is placed in the subfamily Cichlinae.
Geophagus is a tribe of cichlids from the subfamily Cichlinae, the American cichlids. It is the sister taxon to the clade which includes the Cichlasomatini and Heroini. Fishes in the Geophagini are distributed from Panama south to Argentina, it is the most speciose of the seven tribes within the Cichlinae and it is subdivided into three sub-tribes, Acarichthyina, Crenicaratina, and Geophagina which together contain over 200 species. Geophagines show morphological and behavioural specialisations to enable them to sift the substrates within their mouths so that they can separate benthic invertebrates from substrates dominated by sand or silt.
