We assessed the fish assemblage structure and composition of Nova Ponte Reservoir (Araguari River, Upper Paraná Basin, Brazil). We observed significant differences in abundance (p = 0.0003), richness (p = 0.0005) and diversity (p = 0.02) between lacustrine and riverine zones of the reservoir. Nine species were significantly more abundant in the riverine region: Astyanax altiparanae, Astyanax gr...

Characidium is a Neotropical fish genus. Its distribution ranges from eastern Panama to northern Argentina, and it is an important component of the Neotropical ichthyofauna present in the major rivers of South America. We here provide an approximation to the dispersal and historical distributions of Characidium. The biogeographic history of five species of the genus was analyzed through nuclear...

Abstract Mining activities have significantly affected the Neotropical freshwater ichthyofauna, most diverse in world. However, no study has systematized knowledge on subject. In this review, we assembled information main impacts of mining crude oil, gold, iron, copper, and bauxite aquatic ecosystems, emphasizing fishes. The obtained shows that generate several different disturbances, mainly vi...

This paper constitutes the first qualitative study of coral reef fish populations in the archipelago of the Glorieuses Islands (northern Mozambique Channel). Sampling by visual census techniques, at depths between 0 and 15 meters, was carried out at 30 stations spread over the whole reef. Three hundred and thirty-two (332) fish species belonging to 57 families were registered in this way. These...

To examine the temporal patterns in the occurrence of a tropical ichthyofauna, fisheries-independent samples were collected between September 2003 and July 2004 from intertidal mangrove creeks in the Curuçá estuary, Pará, north Brazil. Juveniles occurred year-round with the most intense occurrence during the wet/dry transition season (Anchovia clupeoides, Cetengraulis edentulus, Rhinosardinia a...

Based on the results of ichthyological monitoring, structure catches fixed, ring and smooth nets, as well fry seine for sections upper lower reaches Moscow River in 2010–2018 is presented. There were no significant changes composition ichthyofauna above capital compared to 80–90s twentieth century. In middle river, limnophile fish dominate number biomass. The share invasive previously not accou...

The species composition of the ichthyofauna Samara River under influence man-made factors in Novomoskovsk district Dnipropetrovsk region is presented. environmental problem characterized, and on revealed. was analyzed based literature data, field ichthyological studies were also conducted to determine River. results technogenic modern realities have been obtained are summarized relation ichthyo...

The tropical Asian cyprinid genus Puntius is a major part of the ichthyofauna in Southeast Asia. Systematic status of the genus Puntius among Cyprinidae, the most prominent freshwater fish all over the world, remain to be substantiated. The molecular phylogenetic analyses derived from Recombination activating genesequences (RAG2) for 35 representative samples of Malaysian Puntius and their alli...