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Rediscovery and redescription of the unusual subterranean characiform Stygichthys typhlops, with notes on its life history

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Abstract:

The rediscovery of the enigmatic subterranean characiform Stygichthys typhlops is reported almost a half-century after the collection of the holotype, the only specimen previously known. Thirty-four specimens were collected in two shallow hand-dug wells at the region of the type locality, c. 13 km south-west of the town of Jaíba, Minas Gerais, Brazil. These specimens provide new information on the morphology of this species, and for the first time on its life history. The conservation status of S. typhlops is discussed. The species is severely threatened by habitat loss caused by exploitation of the aquifer.

Keywords: Characidae; Characiformes; conservation; hypogean fishes

Document Type: Regular Paper

DOI: http://dx.doi.org/10.1111/j.1095-8649.2010.02625.x

Affiliations: 1: Seção de Peixes, Museu de Zoologia da Universidade de São Paulo, Caixa Postal 42494, CEP 04218-970, São Paulo, SP, Brazil 2: Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, Caixa Postal 11461, CEP 05422-970, São Paulo, SP, Brazil

Publication date: May 1, 2010

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