Myloplus rhomboidalis (Cuvier 1818)

Distinct pairing during copulation (Ref. 205).

Occurs along the calm banks of main rivers and also near the rapids. During the rainy season when growth is maximal, it feeds on fruits and consumes the seeds of palm trees like Euterpa oleracea, Taralea oppositifolia, Mauritia flexuosa and other plants like Inga sp. and Psidium sp. which they crush with their strong jaws. During the dry season, their diet consists more of aquatic plants like Mourea fluviatilis and Apinagia richardiana and gastropods and fish (Ref. 12225). Its flesh is excellent but it is preferable not to consume it at the end of the rainy season because then its flesh is very high in fat (Ref. 27188).

Myloplus rhomboidalis, is a medium to large omnivorous fish of the family Serrasalmidae from South America, where found in the Amazon River basin, as well as the north and the eastern Guiana Shield rivers. It and can grow to a length of 40.7 cm (16.0 in).