Zootaxa 1366: 1–44 (2006) ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ ZOOTAXA 1366 Copyright © 2006 Magnolia Press ISSN 1175-5334 (online edition) A review of the Malagasy Pachypanchax (Teleostei: Cyprinodontiformes, Aplocheilidae), with descriptions of four new species PAUL V. LOISELLE New York Aquarium, Surf Ave. & West 8th St., Brooklyn, NY 11225, USA. E-mail:
[email protected] Table of contents Introduction ....................................................................................................................................... 2 Methods and materials ...................................................................................................................... 3 Generic placement of the Malagasy aplocheilids .............................................................................. 4 Species accounts ................................................................................................................................ 7 Pachypanchax omalonotus (Duméril, 1861) ............................................................................. 7 Pachypanchax sakaramyi (Holly, 1928) ..................................................................................14 Pachypanchax varatraza sp. nov. ............................................................................................20 Pachypanchax patriciae sp. nov. .............................................................................................25 Pachypanchax sparksorum sp. nov. ........................................................................................30