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Characins
/ Characinae / Bucktoothed Tetra
Bucktoothed Tetra
Exodon paradoxus | Pictures
Exodon paradoxus
SYN: Epicyrtus
exodon, E. paradoxus, Hystricodon paradoxus
PD: An elongated, laterally compressed species having a forked caudal fin.
The
body is yellow-silver with a yellow to green iridescence.
A dark stripe runs from the gill cover to the
caudal penuncle.
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)
SS: None
HAB: Inhabits small, moving streams in South America; Rio Branco, Rio Madeira, Rio Marmelo
in Brazil and Guyana.
S: middle
TANK: A 40” (102 cm) or 45-55 gallon (170-209 L) tank is adequate, although larger tanks
are preferred.
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.
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.
B:
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
Artemia nauplii.
The
young must be frequently sorted to prevent cannibalism.
BP: 8.
Breeding is unusual.
R:
A hardy species.
DC: 6. The hardy and predatory species is not suggested for most community tanks.
Recent articles about fish
Overfishing may hurt Amazon forest trees
(2/5/2008) Overfishing is reducing the effectiveness of seed dispersal by fish in the Brazilian Pantanal, reports Nature. The research suggests that fishing practices can affect forest health.
Scientists find fish that literally lives in trees
(10/17/2007) Scientists have found a fish that literally lives in trees, according to research published in The American Naturalist and highlighted in New Scientist Magazine.
Piranhas originated when Amazon was flooded by seawater
(12/4/2007) South America's piranha family of fish -- notorious as eaters of flesh -- can be traced back to a single ancestor which dispersed when the Amazon was flooded by seawater some five million years ago, report researchers from the Institut de Recherche Pour le Developpement (IRD). Today piranhas are exclusively freshwater fish found from the Orinoco River basin in Venezuela to the Parana in Argentina.
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