Mylossoma aureum (Silver Dollar): In Stock on TF2YD
26 August 2020
Mylossoma aureum is sometimes referred to as a Silver Dollar. However, Silver Dollar is a common name given to a number of species of fishes, mostly in the genus Metynnis, tropical fish belonging to the family Characidae which are closely related to piranha and pacu. Another more specific common name for this species is Golden Mylossoma.
The genus Mylossoma have a deep, flattened body, almost as circular as the Metynnis species, predominantly when they are young. During growth, the depth of the body becomes comparatively less than its length (as mentioned by L.P. Schultz concerning Venezuelan species). This growth phenomenon is called negative allometry. In summary, Mylossoma is easily distinguished from Colossoma by its shape, as well as by it's long anal fin, which is almost entirely covered with little scales.
Native to South America, these somewhat round-shaped silver fish are popular with fish-keeping hobbyists. This species of serrasalmid (which originates from the Amazon and Orinco Basins in South America) is sometimes considered to be a semi-aggressive one. In actual fact, they are more often a peaceful schooling fish which grow to a length of around 20cm and therefore require a larger sized tank to thrive.
The Mylossoma aureum spends most of its time in the mid-upper level within the aquarium and if cared for properly, they can live for over ten years. Although they are omnivorous, they prefer to mostly feed on plant material. Of course, certain plants may be best avoided due to the fact they will likely just get eaten. A large part of their diet should be vegetable, although dry food should be accepted by them as well.
The aquarium should also be set up with a strong water flow to mimic their natural habitat. Driftwood, roots and stones are great ideas for an optimum environment. It is also advised to have a powerful filter and keep the water at a pH of 6-7.5 and between 22 - 28C.
Regarding tank mates, these stunning fish should be kept in a community tank with fish that can't fit in their mouth. Many find it easier to keep them in a schooling group on their own with perhaps the odd catfish. Should you choose to keep them in a community, once they are fully grown they are probably best to be put with larger fish like oscars, pikes, certain sting rays and larger catfish.