Diamond Tetra

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Moenkhausia pittieri - Eigenmann, 1920
Diamond Tetra

Moenkhausia pittieri.jpg

A group of unpromising, plain-looking juveniles will transform into a glittery school of spectacular adults. JJPhoto.dk


The Diamond Tetra is a wonderful aquarium fish that only attains its most spectacular coloration as an adult. Unfortunately, juveniles offered for sale are somewhat drab and are passed over by many hobbyists. If you can, acquire a group of juveniles and watch them transform into glittery adults with bodies awash in specks of purples, greens and blues.

Family: Characidae

Other common name(s):

  • Pittier's Tetra

Native range:

Habitat: This is a typical tetra that loves room to exercise its swimming abilities. Does best in a long aquarium with plants restricted to the sides and back and open water in the center.

Maximum length: 6 cm (2 in)

Minimum aquarium size: 76 L (20 gal)

Water: Freshwater 22 °C (72 °F) - 26 °C (79 °F)

General swimming level: Mid-level.


Omnivore. They will accept any of the standard aquarium fare, including good-quality flakes, frozen or freeze-dried foods like brine shrimp and bloodworms. Supplement with small live foods, such as Daphnia. As with most tetras, regular feedings of color-enhancing foods will help in maintaining their bright colors.

Aquarium Compatibility

This is a midwater schooling species that should be kept in groups at least three with other mild-mannered community fishes. Do not combine with fin nippers. Males may display toward one another, but no harm is done.


Diamond Tetras are easy-to-breed egg scatterers.


Use a dark background and substrate to show off their colors. They prefer soft, acidic water.

Reference: 101 Best Tropical Fishes
Image credit: JJ
Text credit: KW