Bryconops munduruku is a small freshwater fish of the family Iguanodectidae that lives in the rivers of South America.

Its fins are a variety of yellow, red, black, and clear, and mature males have hooks on select fin-rays.

In mature males, several rays of the anal, pelvic, and dorsal fins bear hooks or spines that are absent in females.

[2] Part of the igarapé Açu is within the Tapajós National Forest and is therefore bordered by dense vegetation;[6] this may present a source of food for B. munduruku, though specific dietary needs are not known.

)[16][17] Bryconops munduruku can be found in sympatry with B. giacopinii, Hyphessobrycon agulha, Moenkhausia comma, and various species of Hemigrammus.

Usually, the water is clear,[18] but instances of illegal gold mining have kicked up or added so much sediment that portions of the river turn entirely brown.

[citation needed] Illegal gold mining is a thriving industry in South America, despite its dangers to both participants and to the environment,[19][20] and so species like B. munduruku are under greater survival pressure.

[21] The importance of the Rio Tapajós, however, has prompted various plans for infrastructure development and legal mining operations to be reconsidered, which offers B. munduruku a greater chance of survival.