Chalceus erythrurus

Parts of the Amazon basin in Peru and Brazil.

Inhabits surface waters of floodplain rivers and lakes.

120 ∗ 45 ∗ 45 cm48 ∗ 18 ∗ 18 in - ~243 litres~64 US gal should be the smallest tank considered. It's capable of a real turn of speed and can injure itself quite easily in small tanks.

It requires a lot of swimming space, so decor is not really critical, although a sandy substrate with some beech branches and floating plants looks very effective, and mimics many of its natural biotopes. Make sure the tank cover is very well-fitting, as it is a renowned jumper.

Temperature: 22 – 26 °C72 – 79 °F

pH: 6.0-7.0

Hardness: 5-15°H

Feeds primarily on insects and aquatic crustaceans in nature. While dried foods are usually accepted, a good proportion of the diet should contain meaty foods such as prawns, mussel, bloodworm, chopped earthworms etc.

It does best when kept either as a single specimen, or in a group with more than 6 fish. In smaller groups, the fish tend to scrap with one another. Other than this, it is a good addition to many larger communities. Tankmates can include similarly-sized characins such as Leporinus, Metynnis, Mylossoma and Brycon sp., large Loricariids, Pimelodiids, and cichlids such as Geophagus or Satanoperca sp. Try to avoid other surface-dwelling species unless the tank is huge.

Unknown.

Not achieved in the hobby to date. In all likelihood it spawns in a similar fashion to C. macrolepidotus

This species can be distinguished from its congener C. macrolepidotus mainly by the red or yellow (as opposed to pink) caudal fin. In addition, it has yellow pectoral and pelvic fins and may also have some yellow colouration on the body. It is seen for sale as often as its relative, although it's quite abundant in nature.