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Cynodontidae, or Dogtooth Characins, are a family of freshwater fishes found in the Neotropics. They belong to the order Characiformes, the family is not very diverse with only 5 genera and 14 species. They have a very peculiar shape, and their name derives from their elongated and well developed canines which they mainly use to eat other fish. Their pectoral fins are also expanded. The maximum length reached is 65 cm.

 Common nameDifficultyMaximum SizeMinimum Tank Size
Cynodon gibbusVampire FishChallenging28 cm150 gal
Hydrolycus scomberoidesVampire Tetra
Sabretooth Tetra
Sabre Tooth Piranha
Vampire Piranha
Sabre Tusk Barracuda
Sabre Tooth Barracuda
Vampire Fish
Challenging30 in250 gal