''Pseudocrenilabrus nicholsi'' is a species of

cichlid Cichlids are fish from the family Cichlidae in the order Cichliformes. Cichlids were traditionally classed in a suborder, the Labroidei, along with the wrasses ( Labridae), in the order Perciformes, but molecular studies have contradicted th ...

native to the

Congo Basin The Congo Basin (french: Bassin du Congo) is the sedimentary basin of the Congo River. The Congo Basin is located in Central Africa, in a region known as west equatorial Africa. The Congo Basin region is sometimes known simply as the Congo. It c ...

in Africa. As other members of the genus ''

Pseudocrenilabrus ''Pseudocrenilabrus'' is a genus of fish in the family Cichlidae, commonly known as the mouthbrooders endemic to rivers and lakes in Central and Eastern Africa. Species There are currently 4 recognized species in this genus: * '' Pseudocrenilab ...

'', it is a

mouthbrooder Mouthbrooding, also known as oral incubation and buccal incubation, is the care given by some groups of animals to their offspring by holding them in the mouth of the parent for extended periods of time. Although mouthbrooding is performed by a va ...

. This species can reach a length of SL. The

specific name Specific name may refer to: * in Database management systems, a system-assigned name that is unique within a particular database In taxonomy, either of these two meanings, each with its own set of rules: * Specific name (botany), the two-part (bino ...

honours the

American American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the " United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, ...

ichthyologist Ichthyology is the branch of zoology devoted to the study of fish, including bony fish (Osteichthyes), cartilaginous fish (Chondrichthyes), and jawless fish (Agnatha). According to FishBase, 33,400 species of fish had been described as of October ...

John Treadwell Nichols John Treadwell Nichols (June 11, 1883 – November 10, 1958) was an American ichthyologist and ornithologist. Life and career Nichols was born in Jamaica Plain, Boston, Massachusetts, the son of Mary Blake (Slocum) and John White Treadwell Nich ...

(1883–1958) who was curator of fishes at the American Museum of Natural History. Nichols originally described this species as ''

Paratilapia ventralis ''Ophthalmotilapia ventralis'' is a species of cichlid endemic to Lake Tanganyika where it is only known from the southern end of the lake. It can reach a length of TL. It can also be found in the aquarium An aquarium (plural: ''aqua ...

'' in 1928 but this name had already been used by

George Albert Boulenger George Albert Boulenger (19 October 1858 – 23 November 1937) was a Belgian-British zoologist who described and gave scientific names to over 2,000 new animal species, chiefly fish, reptiles, and amphibians. Boulenger was also an active botan ...

for another species of cichlid in 1898.

References

*
''Pseudocrenilabrus nicholsi''
nicholsi Fish of Africa Taxa named by Jacques Pellegrin Fish described in 1928 Endemic fauna of the Democratic Republic of the Congo {{Cichlidae-stub