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Holopristis pulcher, also known as the pretty tetra, garnet tetra or black wedge tetra, is a semi-popular aquarium species. In the wild, the species is found near Iquitos in the Peruvian Amazon, and probably also in Brazil and Colombia.
Males can be distinguished from females through the shape of the swim bladder, which can be seen through the fish's semi-transparent body. In males, the swim bladder is pointed, while in females, the swim bladder is rounded.
Aquarists recommend that it be fed prepared foods and small live foods.
Breeding is difficult, as parents must be prevented from eating their own eggs. Eggs usually hatch within 20–24 hours.
The H. pulcher does best in groups of 6 or more.
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