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Type species: Cardiopharynx schoutedeni Poll, 1942

Distinctive characters:

• Spindle-shaped body, more than 3 times as long as high (3.6-3.7). The profile of the head is slightly descending.
• Dorsal fin contains 12-15 hard-rays and 14-16 soft rays; anal fin contains 3 hard rays and 9-11 soft rays. Third ray in the ventral fins are elongated.
• Scales large with 36-38 scales along the longitudinal line.
• Two lateral lines.
• Lower pharyngeal bone heart-shaped covered densely with small bicuspid teeth.
• Outer teeth sub conic arranged in two rows.
• The color of the body is silvery, with the throat, edge of the pelvic fins and caudal fin being black in males. Black spot situated at the base of the dorsal fin.
• Total length 15 cm.

Species currently included:

Cardiopharynx schoutedeni Poll, 1942

Type locality:

Usumbura (Bujumbura), Burundi.

Taxonomic history:

• Cardiopharynx schoutedeni Poll, 1942 - by Poll 1986
• Cyathopharynx schoutedeni (Poll, 1942) - by Greenwood 1983
• Cardiopharynx schoutedeni Poll, 1942

Synonyms:

None

Link to Cardiopharynx schoutedeni in the CRC Catalogue.

Remarks on taxonomic status:

In 1983 P. H. Greenwood transferred Cardiopharynx to Cyathopharynx and regarded the former a junior synonym of the latter, because of the heart-shaped lower pharyngeal bone they have in common. This feature can also found in cichlids from outside Lake Tanganyika as stated by Poll (1986), and therefore cannot be seen as a unique character uniting all species possessing it into a single genus.

Sturmbauer & Meyer´s molecular analyses (1993) showed that Cardiopharynx may form a subclade together with Cyathopharynx and Ophthalmotilapia in the Ophthalmotilapia-clade, which also consists of the genera Ectodus, Lestradea, Cunningtonia and Aulonocranus. This has been confirmed by a recent molecular work, which has also shown that Cardiopharynx schoutedeni either is the most ancestral branch in this subclade or form the sister group of Ophthalmotilapia boops and O. nasuta (Koblmüller et al. 2004).

References:

• Greenwood, Peter Humphry. 1983. "The Ophthalmotilapia assemblage of Cichlid fishes reconsidered". Bulletin of the British Museum (Natural History) Zoology Series. v. 44(n. 4) pp. 249-290 (crc01128).
• Koblmüller, Stephan & W. Salzburger & C. Sturmbauer. 2004. "Evolutionary relationships in the sand-dwelling cichlid lineage of Lake Tanganyika suggest multiple colonization of rocky habitats and convergent origin of bipartental mouthbrooding". Journal of Molecular Evolution. v. 58(n. 1), pp. 79-96 (crc01117) (abstract).
• Maréchal, C. & M. Poll. 1991. "Neolamprologus". Check-list of the freshwater fishes of Africa (CLOFFA). Vol. 4. v. 4; p. 274-294 (crc01132).
• Poll, Max. 1986. "Classification des Cichlidae du lac Tanganika. Tribus, genres et especes". Academie Royale de Belgique, Mémoires de la Classe des Sciences. Collection in 8 - 2ème série; 45 (2); p 1-163 (crc00033).
• Sturmbauer, Christian & A. Meyer. 1993. "Mitochondrial phylogeny of the endemic mouthbrooding lineages of cichlid fishes from Lake Tanganyika in Eastern Africa". Molecular Biology and Evolution. v.10(4); pp. 751-768 (crc01138) (abstract).

© Copyright 2005 Thomas Andersen, all rights reserved

Citation:

Andersen, Thomas. (October 25, 2005). "Synopsis of Cardiopharynx Poll, 1942". The Cichlid Room Companion. Retrieved on May 23, 2013, from: http://www.cichlidae.com/section.php?id=88.