Reproductive and morphological analysis of the trairão Hoplias intermedius in the São Francisco River, downstream from a large reservoir.

Hoplias intermedius, of the Characiformes order and Erytrinidae family, is widely distributed across South America. This commercially interesting species can reach a length of 100 cm and a weight of 15-20 kg. To evaluate the reproductive biology of H.

Morphological analysis of Prochilodus argenteus ovaries in successful and unsuccessful hypophysation-induced reproduction.

Pampus argenteus is a species of economic importance for professional fishing and aquaculture. To analyse the quality of oocytes of P. argenteus, 10 females were kept in tanks of 200 m with an average depth of 1 m in the Integrated Center of Fishing Resources and Aquaculture of Três Marias - CODEVASF.