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Bucktoothed tetra - Exodon paradoxus

Bucktoothed tetra - Exodon paradoxus

Scientific name: Exodon paradoxus

Common name: Bucktoothed tetra

Family: Characidae

Usual size in fish tanks: 7 - 8 cm (2.76 - 3.15 inch)


Recommended pH range for the species: 5.5 - 7.5

Recommended water hardness (dGH): 0 - 18°N (0 - 321.43ppm)

0°C 32°F30°C 86°F

Recommended temperature: 22 - 28 °C (71.6 - 82.4°F)

The way how these fish reproduce: Spawning

Where the species comes from: South America

Temperament to its own species: peaceful

Temperament toward other fish species: aggressive to smaller

Usual place in the tank: Middle levels

Food and feeding

Feed Bucktoothed tetras bloodworms and other meaty foods. If you keep Guppies in the tank, then these Tetras will likely eat the newborns (applies to newborns of other species too). However, try flakes or dried granules and you’ll see if they accept this kind of food. Captivity-bred specimens are usually accustomed to all types of foods.


These Tetras may live even 6-8 years if kept in healthy aquariums.


Females are rounder than males as they carry eggs.


Eggs are laid on plants and hatch in about 3 days. Water changes are considered as a breeding trigger. Parents should be removed from the breeding tank as soon as you notice swimming newborns. However, if spawning occurs in a community aquarium, floating plants (and generally planted fish tanks) will save some specimens. Especially those cautious. Artemia salina is good for newborns.


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