Crenicichla is a genus of cichlids native to South America commonly known as the pike cichlids. They are found in most tropical and subtropical freshwater habitats between the Andes and the Atlantic.
Apistogramma is a large genus of freshwater fish in the family Cichlidae native to South America, but also commonly kept in aquariums. They are dwarf cichlids that mostly feed on tiny animals and have breeding behaviors that vary depending on the exact species.
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 sediment 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 mostly kept in aquariums.
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.
Sven Oscar Kullander is a Swedish biologist specialised in ichthyology. He primarily researches cichlids – notably the genus Apistogramma and the Cichlasoma-complex – and other tropical fresh water fishes. He also has been working with endangered fish species in Sweden.
Crenicichla geayi, also known as the half-banded pike cichlid, is a species of cichlid native to South America. It is found in the Orinoco River basin and in the Portuguesa River basin. This species reaches a length of 18.4 cm (7.2 in).
Saxatilia isbrueckeri is a species of cichlid native to South America. It is found in the Amazon River basin and in the Aripuanã River basin. This species reaches a length of 9.5 cm (3.7 in).
Wallaciia regani is a species of cichlid native to South America. It is found in the Amazon River basin and in the Trombetas River at Cachoeira Porteira, Brazil. This species reaches a length of 7.9 cm (3.1 in).
Saxatilia santosi is a species of cichlid native to South America. It is found in the Amazon River basin and in the Machado River of Rondônia, Brazil. This species reaches a length of 12 cm (4.7 in).
Saxatilia sveni is a species of cichlid native to South America. It is found in the Orinoco River basin, in the Llanos of Venezuela and Colombia. This species reaches a length of 25 cm (9.8 in).
Saxatilia britskii is a species of cichlid native to South America. It is found in the Paraná River basin, in the Paraná River drainage upstream from Guaira, Brazil. This species reaches a length of 14.5 cm (5.7 in).
Crenicichla chicha is a species of cichlid native to South America. It is found in the Rio Papagaio, upper rio Tapajós basin, Mato Grosso, Brazil. This species reaches a length of 13.8 cm (5.4 in).
Crenicichla monicae is a species of cichlid native to South America. It is found in the lower Rio Uaupés and lower Rio Içana, tributaries of the upper Rio Negro in Brazil. This species reaches a length of 27.3 cm (10.7 in).
Saxatilia alta is a species of cichlid native to South America. It is found in the Amazon River basin, in the Branco River basin, Brazil and the Essequibo River basin, Guyana. This species reaches a length of 16 cm (6.3 in).
Saxatilia lucius is a species of cichlid native to South America. It is found in the Amazon River basin in Peru and western Brazil. This species reaches a length of 16.8 cm (6.6 in).
Saxatilia frenata is a species of cichlid native to South America. It is found in Trinidad and northeastern Venezuela. This species reaches a length of 11.6 cm (4.6 in).
Saxatilia labrina is a species of cichlid native to South America. It is found in the Amazon River basin, in the lower Tocantins River basin. This species reaches a length of 16 cm (6.3 in).
Saxatilia saxatilis, the ring tailed pike cichlid, is a species of cichlid native to South America. It is found swimming in the Atlantic coast drainages of Suriname, French Guiana, Guyana, Venezuela and Trinidad. This species reaches a length of 20 cm (7.9 in).
Crenicichla ploegi is a species of cichlid native to South America. It is found swimming in Brazil. This species reaches a length of 28 cm (11 in).
Wallaciia is a South American genus of cichlids from the tribe Geophagini. The genus was only erected in mid-2023 by four South American ichthyologists and their Swedish colleague Sven O. Kullander. It was named in honour of the British naturalist Alfred Russel Wallace, and is a near-tautonym of the chosen type species. Previously, the species placed in Wallaciia belonged to the genus Crenicichla and formed the Crenicichla wallacii species complex. The genus Wallaciia occurs in the Amazon Basin from the Rio Madeira to the Rio Tocantins, but is absent west of Santo Antônio do Içá or the mouth of the Río Putumayo into the Amazon. The genus is also found in the drainage basins of the Orinoco and the Essequibo.
