Occurrence of the Indo-Pacific freshwater prawn Macrobrachium equidens Dana 1852 on the coast of Brazilian Amazonia, with notes on its reproductive biology.

The freshwater prawn Macrobrachium equidens, which is native species of the Indo-Pacific Region, was recorded for the first time on the Amazon coast of Brazil. This species was found to inhabit the same environment as two native Macrobrachium species, M. amazonicum and M.