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Type species: Cyathopharynx foai (Vaillant, 1899)

Distinctive characters:

• Oblong and relatively high body, less than 3 times longer than high, with convex dorsal and ventral profiles
• Dorsal XIII-XIV, 13-15. Anal III, 8-10. The soft rays of the unpaired fins are prolonged and may reach beyond the origin of the caudal fin in the male. Ventral fins in mature males prolonged without spatulae, nearly reaching to the caudal fin. Caudal deeply cresentric with filamentous lobes in the male.
• Small subterminal mouth. Teeth tricuspid, conical or subconic, arranged in 3-5 lines.
• Lower pharyngeal bone with the posterior border rounded, and covered densely with very fine more or less bicuspid teeth.
• Small scales , 48-67 along the longitudinal line.
• Two lateral lines.
• Total length 210 mm

Species currently included:

Cyathopharynx foai (Vaillant, 1899)

Type locality:

Lake Tanganyika

Taxonomic history:

• Cyathopharynx foai (Vaillant, 1899) - by Konings 1998
• Cyathopharynx furcifer (Vaillant, 1899) - by Poll 1946
• Cyathopharynx foae (Vaillant, 1899) – by Regan 1920
• Ophthalmotilapia foae (Vaillant, 1899) – Pellegrin 1904
• Ectodus foae Vaillant, 1899

Synonyms:

• Tilapia grandoculis Boulenger, 1899
• Cyathopharynx grandoculis (Boulenger, 1899)

Link to Cyathopharynx foai in the CRC Catalogue.

Cyathopharynx furcifer (Boulenger, 1898)

Type locality:

Kinyamkolo, Zambia.

Taxonomic history:

• Cyathopharynx furcifer (Boulenger, 1898) - by Regan 1920
• Paratilapia furcifer Boulenger, 1898

Synonyms:

None.

Link to Cyathopharynx furcifer in the CRC Catalogue.

Remarks on taxonomic status:

Konings discovered two species of Cyathopharynx living and breeding sympatric at Moliro, D. R. Congo: Cyathopharynx furcifer, and a species that fits the description of C. foai, a taxa long considered a junior synonym of C. furcifer, and Konings therefore suggested that C. foai should be rehabilitated as a valid taxa (Konings 1998). Note that not all authors follow this suggestion.

Besides the two described species of Cyathopharynx, several potentially un-described species might very well exist in the Lake as well, as populations of Cyathopharynx has been found in the northern part of the Lake, which has some similarities with C. furcifer or C. foai from the southern part, but also differ in both morphology and coloration.

The molecular analysis of the tribe Ectodini by Koblmüller et al. (2004) showed that Cyathopharynx form a subclade within the Ophthalmotilapia-clade, together with the genera Cardiopharynx and Ophthalmotilapia. Interestingly the analysis suggest that Cyathopharynx furcifer forms a cluster together with O. heterodonta and O. ventralis (could actually be C. foai, which is not considered a valid taxa by Koblmüller at al.)

Literatur:

• Boulenger, George Albert. 1898. "Report on the collection of fishes made by Mr. J. E. S. Moore in Lake Tanganyika during his expedition 1895-96". Transactions of the Zoological Society of London. pp. 1-37 (crc00006).
• Boulenger, George Albert. 1899. "Second contribution to the ichthyology of Lake Tanganyika - On the fishes obtained by the Congo Free State Expedition under Lieut. Lemaire in 1898". Transactions of the Zoological Society of London. 28 (49); 15 (4/1); p 88 (crc00043).
• 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) (Kurzfassung).
• Konings, Ad. 1998. "Tanganyika Cichlids In Their Natural Habitat". Cichlid Press (crc00734).
• Pellegrin, Jacques. 1904. "Contribution à l'étude anatomique, biologique et taxinomique des poissons de la famille des Cichlidés - Taxinomie". Bulletin de la Société Zoologique de France. pp 121-400 (crc00027) (Kurzfassung).
• 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).
• Regan, Charles Tate. 1920. "The Classification of the Fishes of the Family Cichlidae.-I. The Tanganyika Genera". Annals and Magazine of Natural History. (Ser. 9) v. 5; n. 25; pp. 33-53 (crc00028).
• Vaillant, Leon Louis. 1899. "Protopterus retropinnis et Ectodus foae". Bulletin du Musée National d'Histoire Naturelle. pp. 219-222 (crc00092).

© Copyright 2007 Thomas Andersen, all rights reserved

Anführung:

Andersen, Thomas. (Februar 09, 2007). "Synopsis of Cyathopharynx Regan, 1920". Der Cichlid Room Companion. Abgerufen am Mai 22, 2013, von: http://www.cichlidae.com/section.php?id=190&lang=de.