TITLE

A New Species of Characidium (Characiformes: Crenuchidae) from Coastal Basins of Serra do Mar, Southeastern Brazil

AUTHOR(S)
Leitão, Rafael P.; Buckup, Paulo A.
PUB. DATE
February 2014
SOURCE
Copeia;Feb2014, Vol. 2014 Issue 1, p14
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Characidium litorale, a new species of characidiin fish, is described from coastal basins of the northeastern portion of the Serra do Mar, State of Rio de Janeiro, southeastern Brazil. The species presents thin dark secondary bars (vertical streaks not associated with dorsal marks) positioned between the primary vertical bars (bars directly associated with well-defined dorsal marks) on the side of the body. Characidium litorale is the first species described from the southeastern Brazilian coastal drainages with basicaudal black spot well defined, fully scaled isthmus, and hyaline fins. Unlike other species of Characidium from this region (predominately found associated with rocky substrate), C. litorale has psammophilous habits. An identification key to the species of Characidium occurring sympatrically with the new species is presented. Descreve-se Characidium litorale, nova espécie de peixe caracidiíneo distribuída em bacias costeiras da porção nordeste da Serra do Mar, Estado do Rio de Janeiro, sudeste do Brasil. A espécie apresenta barras secundárias finas e escuras (estrias verticais não associadas a manchas dorsais) localizadas entre as barras verticais primárias (barras diretamente associadas a manchas dorsais bem definidas) das laterais do corpo. Characidium litorale é a primeira espécie descrita das drenagens costeiras do sudeste do Brasil com ponto preto basicaudal bem definido, escamação completa no istmo, e nadadeiras hialinas. Diferentemente das outras espécies de Characidium dessa região (predominantemente encontradas associadas a substratos rochosos), C. litorale possui hábitos psamófilos. Apresenta-se uma chave de identificação para espécies de Characidium que ocorrem em simpatria com a nova espécie.
ACCESSION #
96204475

 

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