Ichthyofauna from 29 tidepools in Jericoacoara National Park (Ceará State, Brazil) was sampled. A total of 733 fishes, comprising 16 species belonging to 12 families, was collected. The three most abundant species were the frillfin goby Bathygobius soporator, the sergeant-major Abudefduf saxatilis and the molly miller Scartella cristata. An invasive species from the Indo-Pacific, the Muzzled blenny Omobranchus punctatus, was also recorded. The known geographic distribution of the blenny Hypleurochilus fissicornis was extended approximately 2,500 km northward. These findings highlight the lack of knowledge of the rocky intertidal ecosystems along the Brazilian coast, an area that needs more sampling effort and ecological data. Keywords: rockpools, reef, intertidal zone, fish community, rocky shore.MACHADO, F.S., MACIEIRA, R.M., ZULUAGA GÓ MEZ, M.A., COSTA, A.F., MESQUITA, E.M.C., GIARRIZZO T. Inventário dos peixes de poças de mare do Parque Nacional de Jericoacoara, Atlântico sudoeste, com informações ecológicas adicionais.http://dx.doi. org/10.1590/1676-06032015011114Resumo: Um total de 733 espécimes de peixes, pertencentes a 16 espécies (12 famílias), foi capturado em 29 poças de maré no Parque Nacional de Jericoacoara (Ceará , Brasil). As espécies mais numericamente abundantes foram o amboré Bathygobius soporator, o sargentinho Abudefduf saxatilis e o macaco-verde Scartella cristata. Uma espécie invasora originá ria do Indo-Pacífico, Omobranchus punctatus, foi registrada para a á rea. A ocorrência de Hypleurochilus fissicornis permitiu expandir sua distribuição geográ fica em cerca de 2.500 km ao norte. Esses resultados demostram que diversos aspectos relacionados a ictiofauna do ecossistema entremarés em substrato consolidado ainda permanecem pouco estudados no Brasil, e portanto, mais levantamentos da biodiversidade e dados ecoló gicos são necessá rios.
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