Trematochromis benthicola

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Trematochromis benthicola
Systematics
Order : Cichliformes
Family : Cichlids (Cichlidae)
Subfamily : Pseudocrenilabrinae
Tribe : Cyphotilapiini
Genre : Trematochromis
Type : Trematochromis benthicola
Scientific name of the  genus
Trematochromis
Poll , 1987
Scientific name of the  species
Trematochromis benthicola
( Matthes , 1962)

Trematochromis benthicola ( synonyms : Ctenochromis benthicola , Trematochromis schreyeni Poll, 1987 ) is an endemic species of cichlid from the northern part of Lake Tanganyika .

features

Trematochromis benthicola is about 21.5 cm long and has a high-backed, laterally slightly flattened body and a very protruding mouth. The body height is 31.8 to 41.1% of the standard length , the head length 35.5 to 39.4% of the standard length. The sides of the body are covered with comb scales, the throat is scaled, as is the base of the dorsal and anal fin. On the caudal fin there are scales in the section near the body between the individual fin rays . The paired fins are unscaled. Characteristic of the species is a thick sensory canal with large, widely spaced pores on the six bones of the eye ring (infraorbitalia). Both jaws are covered with several rows of single-pointed teeth. The outer row is regular, with the inner three to six rows, which are occupied by smaller teeth, the teeth in the front section of the upper jaw are arranged irregularly. The upper and lower side lines are separated by two rows of scales.

Trematochromis benthicola is a mouthbrooder in which, as in most cases, the female does the breeding business. The strongly protruding mouth could indicate a plankton eater.

Systematics

The species was described as Haplochromis benthicola by Matthes in 1962 , but was placed in the genus Ctenochromis by Poll in 1986 . In 1987 the same author described another species of cichlid with the same type locality as Trematochromis schreyeni . This was synonymous in 2006 with "Ctenochromis" benthicola . Since "Ctenochromis" benthicola does not show the diagnostic characteristics of the genus Ctenochromis (crest scales below the upper sideline, round scales above), it is increasingly popular in recent publications to use the generic name from Poll's description of 1987 for "Ctenochromis" benthicola , the so that it comes under the scientific name Trematochromis benthicola . Trematochromis is probably the sister genus of Cyphotilapia and thus belongs to the tribe Cyphotilapiini.

literature

Individual evidence

  1. ↑ Matthes, H. (1962). Poissons nouveaux ou intéressants du lac Tanganika et du Rwanda. Annales du Musée Royal de l'Afrique Centrale (Sciences Zoologiques) 111, 27-88.
  2. ^ Poll, M. (1986). Classification of the Cichlidae du lac Tanganika. Tribes, genres et espèces. Académie Royale de Belgique Mémoires des Classe des Sciences 45, 1-163.
  3. ^ Poll, M. (1987). Un genre inedit pour une espece nouvelle du lac Tanganyika: Trematochromis schreyeni gen. N., Sp. n. statut de Tilapia trematocephala Blgr 1901. Cybium 11, 167-172.
  4. ↑ Weiss, JD, Cotterill, FPD & Schliewen, UK (2015): Lake Tanganyika — A 'Melting Pot' of Ancient and Young Cichlid Lineages (Teleostei: Cichlidae)? PLoS ONE , 10 (4): e0125043. April 30, 2015, DOI: 10.1371 / journal.pone.0125043
  5. ↑ Muschick, M., Indermaur, A., Salzburger, W., 2012. Convergent evolution within an adaptive radiation of cichlid fishes. Curr. Biol. 22, 2362-2368.

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