Pachypanchax (Myers, 1933)

Pachypanchax, a new Genus of Cyprinodont Fishes from the Seychelles Islands and Madagascar.

Amer. Mus. Novitates, 592: 1.

Type-species: by original designation as Haplochilus playfairii Günther, 1866.

Type locality: Seychelles (island, without details).


Pachypanchax omalonotus

First Description:  A. Duméril  1861.

(Reptiles et Poissons d'Afrique Occcidentale. Arch. Mus. Hist. Natur., 10 (1858-1861): 137-268, pls. 13-23.)


Verbreitung: Nord Madagaskar 

Pachypanchax omalonotus

Pachypanchax sakaramyi

First Description:  M. Holly 1928.

(Zwei noch nicht beschriebene Fischformen aus Afrika.  Zool. Anz., 76: 312-314.)


Verbreitung: Nord Madagaskar 

Pachypanchax sakaramyi



Pachypanchax playfairii

First Description: A. Günther 1866

(Catalog of Fishes in the British Museum. Catalogue of the Physostomi, containing the families Salmonidae, Percopsidae, Galaxidae, Mormyridae, Gymnarchidae, Esocidae, Umbridae, Scombresocidae, Cyprinodontidae, in the collection of the British Museum. British Museum, London, 6: i-xv +368 pp.)


Verbreitung: Seychellen und auf Sansibar


Pachypanchax playfairii "Beau Vallon Mahé"

Pachypanchax varatraza 

First Description:  P.V. Loiselle, 2006

(A review of the Malagasy Pachypanchax (Teleostei: Cyprinodontiformes, Aplocheilidae), with descriptions of four new species. Zootaxa 1366:1-44.)

Pachypanchax varatraza 




Pachypanchax patriciae (P.V. Loiselle, 2006)

Pachypanchax sparksorum (P.V. Loiselle, 2006)

Pachypanchax arnoulti (P.V. Loiselle, 2006)

A review of the Malagasy Pachypanchax (Teleostei: Cyprinodontiformes, Aplocheilidae), with descriptions of four new species PAUL V. LOISELLE (Zootaxa 1366: 1–44 (2006))


Abstract:  The history of the genus Pachypanchax Myers, 1933 in the literature is reviewed and the utility of the diagnostic characters proposed by various authors is evaluated. On the basis of five synapomorphies, four skeletal and one squamational, six of the seven presently known Malagasy aplocheilids are found to be unambiguously referable to the genus Pachypanchax. The seventh, Poecilia nuchimaculata Guichenot 1866, known only from the unique type specimen, displays several peculiar skeletal and squamational features. Pending the acquisition of additional material, it is tentatively assigned to the genus. Of the six species treated here, Pachypanchax omalonotus (Duméril, 1861) and P. sakaramyi (Holly, 1828) are redescribed from recently collected topotypical material; and the following four are described as new: P. varatraza., P. patriciae, P. sparksorum, and P. arnoulti. Data on life colors, distribution, natural history and conservation status on all six Malagasy Pachypanchax species are presented.