Research Group

Fish Biology and Ecology

This research group is developing studies on the ecology and biology of ichthyofauna in the middle Solimões region, with an emphasis on the white-water floodplain ecosystem. Research results have served to support decision making on conservation and management regulations for some fish species; it has also provided opportunities for the development of scientific knowledge on ichthyofauna of the Amazon. 

The group has also collaborated with other research groups from different regions in Brazil who are interested in these themes in the middle Solimões region. 

Get to know some of the fish studied by the group:

is a common denomination of fresh water fish of the Osteoglossidae family. They are close relatives of the Arapaima and like these fish, they also have osseous “tongues”, flattened heads, and long bodies composed of large scales. They are carnivores and excellent jumpers; for this reason, they are often called “water monkeys”. 
Rafael Forte
is the largest freshwater scaly fish on the planet. It can grow up to three meters, weighing up to 200 kilos. Arapaima are found in the Amazon Basin, especially in lowland areas. Individuals have two breathing apparatuses, one branchial and the other aerial, so that from time to time, it must come up to the surface for oxygen.
Acará disco
Jonas Oliveira
Symphysodon aequifasciatus is one of the species grouped under the common name Acará disco. The species if found throughout the Amazon Basin in lakes, lagoons and rivers with calm, shallow and crystalline waters. It feeds on small-sized crustaceans, other fish species, insects, leaves and fruits. It is a highly valued and appreciated ornamental fish species. 

© Bernardo Oliveira

Fish species richness in Amazonia

In the Nootropics, Brazil is considered the country with the greatest freshwater fish diversity, with 2,122 cataloged species, representing 21% of all the species encountered. An estimated 1,500 to 3,000 species are recorded in Amazonia. The existing mosaic of aquatic ecosystems formed by creeks, lakes and canals of white and black waters is responsible for the richness and high levels of fish diversity found in Amazonia. 

Rafael Forte


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