Mylesinus

Mylesinus is a genus of freshwater serrasalmid fish native to South America, primarily found in the Amazon and Orinoco basins. These fish are characterized by their laterally compressed bodies, deep profiles, and generally herbivorous diets.

While commonly referred to as "dollar fish" or "silver dollars" in the aquarium trade (a name often shared with members of the Metynnis and Myloplus genera), Mylesinus species can be distinguished by specific morphological features. These include, but are not limited to, dentition patterns, body shape, and fin ray counts.

Mylesinus species are typically found in slower-moving waters, often associated with flooded forests and areas with abundant vegetation, which forms a key part of their diet. Their feeding habits consist primarily of aquatic plants, fruits, and seeds.

The taxonomy of Mylesinus has been subject to revisions, with several species having been moved between different genera within the Serrasalmidae family over time. Further research is ongoing to clarify the relationships between the various species and their evolutionary history.

Because of their relatively peaceful nature and attractive appearance, some Mylesinus species are popular choices for larger aquariums, requiring spacious tanks due to their potential adult size. However, specific care requirements, including appropriate water parameters and diet, are essential for their long-term health and well-being in captivity.