exodon, E. paradoxus, Hystricodon paradoxus PD: An elongated, laterally compressed species having a forked caudal fin.
body is yellow-silver with a yellow to green iridescence.
A dark stripe runs from the gill cover to the
The lower parts are dull yellow.
The body is marked with two conspicuous black
spots: one near the base of the dorsal fin, and another at the caudal penuncle.
The fins are colorless except for the
red base of the dorsal fin and first red rays of the anal fin.
SIZE: To 6” (15 cm)
HAB: Inhabits small, moving streams in South America; Rio Branco, Rio Madeira, Rio Marmelo
in Brazil and Guyana.
TANK: A 40” (102 cm) or 45-55 gallon (170-209 L) tank is adequate, although larger tanks
The tank can be well-planted.
A tight fitting cover is required.
WATER: pH 5.5-7.5 (6.5), 0-18 dH (8), 72-82°F (22-28°F)
SB: A predatory species that should be kept singly or in schools of ten or more fish.
in smaller groups have a tendency to eat the scales and eyes of other fish.
This species is not suggested for the
typical community tank.
SC: Larger characins, Loricarids, Pimelodids, Cichlasomines
FOOD: Flake; pellet; live; fish, worms, insect larvae, crustaceans; chopped meat.
SEX: Females are plumper.
Use soft, peat-filtered water to initiate spawning.
Eggs are scattered among plants, and
the parents should be removed.
The eggs hatch in 24-30 hours and the young can be fed micro-foods and
young must be frequently sorted to prevent cannibalism.
Breeding is unusual.
A hardy species.
DC: 6. The hardy and predatory species is not suggested for most community tanks.