Owing to the large size attained by adults, only juveniles of this species are suitable for most aquaria. A similar-looking species, D. sexfasciatus (Six-lined Distichodus) —also from the Congo basin in D. R. Congo—can be confused with this species, although, as its name implies, the Long- nosed Distichodus has a somewhat longer and more pointed snout than its close relative.
The Silver Distichodus was first imported into Europe in 1911 and has been available ever since, despite its plant-eating habits. Overall, it is similar to D. noboli (Nobol’s Distichodus) from Upper Congo (D. R. Congo), with which it is sometimes confused. All Distichodus are specialist feeders and are best suited to experienced aquarists.
Shaped rather like a coin, with a silvery body color, the Silver Dollar makes an impressive tank occupant, especially when a shoal of these fish are housed together. They can be sexed quite easily, since the anal fin is longer in males and has a reddish tinge at the front.
[Ebook] Encyclopedia of Aquarium & Pond Fish – David Alderton (Photo by Max Gibbs)
Distichodus species are well known as plant eaters, but this should not deter you from trying to keep them at one time or another. All seem happy in water conditions of about 10-20 dH, neutral to slightly acid, and a temperature of 23-2 7°C (73-81°F) is suitable.
The characins are a large group of freshwater fishes found in South and Central America and Africa. They are characterized by the Weberian Apparatus (the linkage of bones between the swimbladder and the inner ear) that allows them to hear high frequency sounds.
[Ebook] The New Guide to Aquarium Fish – A comprehensive and authoritative guide to tropical freshwater, brackish, and marine fishes – Mary Bailey – Gina Sandford