Taxa named by Humphry Greenwood

The Gonorynchiformes are an order of ray-finned fish that includes the important food source, the milkfish (Chanos chanos, family Chanidae), and a number of lesser-known types, both marine and freshwater.

Anomalochromis is a genus of fish in the family Cichlidae, containing the single species Anomalochromis thomasi, the African butterfly cichlid. It is a small cichlid growing to a length of . The natural habitat of A. thomasi is Sierra Leone, Liberia, and Guinea, mainly in smaller streams. The fish are typically found in slightly acidic, oxygen-rich water with other West African cichlid genera such as Hemichromis and Pelvicachromis.

thumb|Orthochromis polyacanthus Orthochromis is a genus of relatively small haplochromine cichlids native to rivers and lakes in Eastern and Middle Africa. Most of its species are rheophilic.

Thoracochromis is a fish genus of haplochromine cichlids that are endemic to Africa. Most species are from rivers in Angola and Namibia, or the Congo River Basin in Central Africa, but T. wingatii is from the Nile system. Additionally, there are a few apparently undescribed species from the Nile system (two in its delta and one from lakes near Fayum), which appear to be close relatives of T. wingatii or Haplochromis loati. Many species have been moved between this genus and Haplochromis, and while some consensus has been reached in recent years, their mutual delimitation is still far from sett

species of fish

Pharyngochromis is a genus of cichlids native to Southern Africa where they are only known from the Zambezi, Okavango, Save–Runde and Kunene basins. There are two species, which reach up to in total length, respectively.

Parananochromis is a genus of cichlids native to tropical Africa.

species of fish

species of fish

species of fish

species of fish

species of fish

species of fish

species of fish

species of catfish

species of fish

species of fish

species of fish

species of fish

species of fish

species of fish

species of fish

Pyxichromis is a genus of haplochromine cichlids. The species in this genus are currently included in Haplochromis by FishBase. Each species is endemic to a different Rift Valley lake in East Africa.

Xenoclarias is a genus of airbreathing catfishes (family Clariidae) endemic to Lake Victoria. This genus contains two species Xenoclarias eupogon (Norman, 1928) (Lake Victoria deepwater catfish) Xenoclarias holobranchus Greenwood, 1958

Limbochromis robertsi is a species of cichlid endemic to Ghana where it is found in the upper reaches of the Pra River Basin. This species has been recorded reaching a maximum length of TL. It is currently the only known member of its genus. The specific name honours the American ichthyologist Tyson R. Roberts who collected the type. Deforestation driven by increased agriculture and small-scale mining operations has reduced the total population of this species by approximately 90% from the early 1990s to 2018.