Max Size: 6cm

Diamond Tetra (Moenkhausia pittieri)

The Diamond Tetra is a peaceful shoaling fish that becomes more visually appealing as it matures. Despite their ability to tolerate hard water, these fish should only be kept in soft to medium water conditions over a long period of time.

Despite their excellent shoaling abilities, these Tetras may nibble at elaborate finned fish such as Guppies, Angels, and Siamese Fighters. These Tetras would make good tankmates for other Tetras of similar size, Livebearers, Danios, Rasboras, and peaceful bottom dwellers like Corydoras and Plecos. You can also keep the majority of commonly available Gouramis and Dwarf Cichlids with it. The rounded shape and size of the adult can also make it an ideal dither for Cichlids such as Geophagus and Discus that are not aggressive.

Diamon Tetras thrive in most well-maintained aquariums, although it does not like bright lights or sparse decorations. An aquarium with dense plants and a dark substrate is ideal, as it will develop some intense colours. Alternatively, you can set up an Amazonian biotope for these Tetras.

Ideally, place a few driftwood branches and twisted roots on a substrate of river sand. The natural look would be completed with a few handfuls of dried leaves. Water should resemble weak tea when wood and leaves are allowed to stain it. Remove old leaves and replace them every few weeks, so they do not rot. In this kind of setup, the lighting should be pretty dim.

The dorsal and anal fins of Diamond Tetras are purple, and the body is silver. There is a noticeable red mark above the pupil of the eye, and a dark stripe runs down the midline of the body. As a result of the bright, shimmering scales along these Tetra's flanks, they are given their name.


Diamond Tetra
Diamond Tetra
Diamond Tetra
Diamond Tetra
Diamond Tetra
Juvenile Diamond Tetras
Diamond Tetra
Dimond Tetra
Quick Facts
Scientific NameMoenkhausia pittieri
Year Described1920
Other NamesDiamond Characin
Aquarium LevelBottom - Middle
Best kept asGroups 6+
Lifespan3 - 5 years
Water Parameters
Water TypeFreshwater
PH5.5 - 7.5
GH5 - 12
KH4 - 8
75 - 82℉
23.9 - 27.8℃


In the home aquarium, the Diamond Tetra will readily accept most good quality dried foods such as granules, flakes and sinking pellets. These modern food products have been developed to provide all adequate nutrition to maintain your fish's health and dietary requirements.

Providing additional foodstuffs such as live, frozen, and freeze-dried meals such as bloodworm, daphnia, and tubifex once or twice a week will provide additional benefits to your fish's health and well-being but is not a must for this fish.

It should be noted that bloodworms should only be given as an occasional treat and should not be used as the staple diet as they are difficult for fish to digest and can potentially cause blockages.

This fish is an omnivore in the wild, meaning it will consume some vegetable matter. Although most modern fish foods take this into account and include them in their products, you can still supplement your fish's diet with blanched vegetables such as spinach, broccoli, and zucchini. Ensure you do not overfeed your fish and remove any leftovers the following day.

Tank Mates

1 interesting tank mate ideas for the Diamond Tetra could include:

Congo Tetra(Phenacogrammus interruptus)

Sexual Dimorphism

Male Dimond Tetras have more distinct dorsal fins than females, and the lower anal fin is shaped like a hook. Mature females are also more rounded and not as vibrant as males. The male's scales are also much more reflective than those of the female.

Other Tetras of interest

Adonis Tetra(Lepidarchus adonis)
African Moon Tetra(Bathyaethiops caudomaculatus)
African Red Eyed Tetra(Arnoldichthys spilopterus)
Arowana Tetra(Gnathocharax steindachneri)
Black Darter Tetra(Poecilocharax weitzmani)
Black Line Tetra(Hyphessobrycon scholzei)
View all Tetras
Date Added: 27/08/2020 - Updated: 04/10/2022 15:30:38