Abstract
Parananochromis axelrodi, P. brevirostris and P. ornatus, three new cichlid species, are described from Gabon and southern Cameroon. Parananochromis axelrodi is a deep-bodied species differing from congeners in a combination of morphometric and meristic characters. Parananochromis brevirostris and P. ornatus are distinguished by the presence of four elements in the infraorbital series versus five elements in congeners. Parananochromis brevirostris differs from P. ornatus in lacking chest squamation and in the presence of a weakly-developed pharyngeal pad (versus well-developed pad and scaled chest in P. ornatus).
References
Barel, C.D.N., van Ojen, M.J.P., Witte, F. & Witte-Maas, E.L.M. (1977) An introduction to the taxonomy and morphology of the haplochromine Cichlidae from Lake Victoria. Netherlands Journal of Zoology, 27, 333-389.
Boulenger, G.A. (1903) Descriptions of new freshwater fishes from southern Cameroon. Annals and Magazine of Natural History, (Ser. 7), 435-441.
Boulenger, G.A. (1913) Descriptions of four new fishes discovered by Mr. G. L. Bates in the Nyong River, S. Cameroon. Annal and Magazine of Natural History, (Ser. 8), 67-70.
Dingerkus, G. & Uhler, L.D. (1977) Enzyme clearing of alcian blue stained whole small vertebrates for demonstration of cartilage. Stain Technology, 52, 229-232.
Géry, J. (1965) Poissons du basin de l’Ivindo. Biologia Gabonica, 1, 375-393.
Greenwood, P. H. (1987) The genera of pelmatochromine fishes (Teleostei, Cichlidae). A phylogenetic review. Bulletin of the British Museum (Natural History), Zoology series, 53, 139-203.
Lamboj, A. (1988) Seltene und unbekannte Cichliden aus Gabun. Deutche Cichliden Gesellschaft, 19, 217-221.
Lamboj A. (1999a) Übersicht über die Fortpflanzungsstrategien der Arten der Gattung Parananochromis (Teleostei; Cichlidae). In: Greven, H. & Riehl R. (Eds) Fortpflanzungsbiologie der Aquarienfischen 2, Schmettkamp-Verlag, Bornheim, pp. 125-132.
Lamboj, A. (1999b) Zur Cichlidenfauna des Biosphärenreservates von Dimonika (Mayombe, Kongo) mit der Beschreibung zweier neuer Arten der Gattung Chromidotilapia (Teleostei,Perciformes). Verhandlungen der Gesellschaft für Ichthyologie, 1, 139-156.
Lamboj, A. (2001) Revision des Chromidotilapia batesii/finleyi-Komplexes (Teleostei, Perciformes), mit der Beschreibung einer neuen Gattung und dreier neuer Arten. Verhandlungen der Gesellschaft für Ichthyologie, 2, 11-47.
Lamboj, A. (2002) Chromidotilapia mrac, a new species of Cichlidae (Teleostei: Perciformes) from Gabon. Ichthyological Explorations of Freshwater, 13, 251-256.
Lamboj, A. (2003) Chromidotilapia melaniae and C. nana, two new cichlid species (Perciformes, Cichlidae) from Gabon, Central Africa. Zootaxa, 143, 1-15.
Lamboj, A. & Snoeks, J. (2000) Divandu albimarginatus, a new genus and species of cichlid (Teleostei: Cichlidae) from Congo and Gabon, Central Africa. Ichthyological Explorations of Freshwaters, 11, 355-360.
Linke, H. & Staeck, W. (2002) Afrikanische Cichliden 1. Buntbarsche aus Westafrika. Ein Handbuch für Bestimmung, Pflege und Zucht. Tetra Verlag, Bissendorf, 232 pp.
Numrich, R. &Wunderlich J. (1988) Auf der Suche nach Parananochromis longirostris. DATZ, 41, 240-242.
Schliewen, U. & Stiassny, M.L.J. (2003) Etia nguti, a new genus and species of cichlid fish from the Mamfue, Upper Cross River basin in Cameroon, West-Central Africa. Ichthyological Explorations of Freshwater, 14(1), 61-72.
Stiassny, M.L.J. (1991) Phylogenetic intrarelationships of the family Cichlidae: an overview. In: Keenleyside, M.H.A. (Ed.) Cichlid fishes, behaviour, ecology and evolution. Chapman and Hall, London, pp. 1-35.
Thys van den Audenaerde, D.F.E. (1968) A preliminary contribution to the a systematic revision of the Genus Pelmatochromis Hubrecht sensu lato (Pisces, Cichlidae). Revue de Zoologie et de Botanique Africaines, 77, 349-391.
Trewavas, E. (1973) A new species of Nanochromis (Pisces, Cichlidae) from the Ogowe system, Gabon. Bulletin of the British Museum(Natural History), Zoology, 28, 233-235.