Diamond Tetra

About the Diamond Tetra

The Diamond Tetra is a stunning freshwater schooling fish renowned for its shimmering iridescent scales that sparkle with blue, green, gold, and violet hues under aquarium lighting. Native to Lake Valencia in Venezuela, this peaceful tetra is an excellent addition to planted aquariums and community tanks, where its brilliant colours truly stand out.

While young Diamond Tetras may appear relatively plain, mature fish develop their signature diamond-like iridescence, making them one of the most eye-catching tetra species available. They are active, social fish that should always be kept in schools of at least six, with larger groups displaying more natural behaviour and enhanced colouration.

Diamond Tetras thrive in well-maintained aquariums with live plants, driftwood, and open swimming areas. They are peaceful companions for Corydoras, rasboras, dwarf cichlids, rainbowfish, gouramis, and other non-aggressive community species. Feeding a varied diet of quality flakes, micro pellets, frozen foods, and live treats will help maintain their health and maximise their spectacular colours.

Quick Care Guide

Scientific Name

Moenkhausia pittieri

Common Name

Diamond Tetra

Origin

Lake Valencia Basin, Venezuela

Adult Size

5–6 cm

Temperament

Peaceful

Diet

Omnivore

Minimum Tank Size

75 Litres

Temperature

24–28°C

pH

6.0–7.5

Water Hardness

2–15 dGH

Difficulty

Beginner to Intermediate

Lifespan

4–6 Years

Suitable For

Peaceful community and planted aquariums

Frequently Asked Questions

Are Diamond Tetras good for beginners?

Yes. They are hardy, peaceful, and easy to care for, making them suitable for beginners with a cycled aquarium.

How many Diamond Tetras should be kept together?

A minimum of six is recommended, although groups of eight or more will display better schooling behaviour and brighter colours.

What do Diamond Tetras eat?

They readily accept quality flakes, micro pellets, frozen bloodworms, brine shrimp, daphnia, and other small live foods.

Can Diamond Tetras live with shrimp?

Adult shrimp such as Amano Shrimp are generally safe, while very small shrimp and shrimplets may occasionally be eaten.

Why aren't my Diamond Tetras sparkling?

Young fish often lack their full colouration. Mature fish kept in excellent water conditions with a varied diet and dark surroundings develop the most vibrant iridescence.

Common Mistakes

Keeping too few fish

Diamond Tetras are schooling fish and become stressed when kept alone or in very small groups.

Expecting juvenile fish to have full colour

Their signature diamond-like shimmer develops as they mature.

Housing them with aggressive species

Avoid keeping them with large or aggressive fish that may bully them.

Poor water quality

Stable, clean water is essential for maintaining their health and brilliant colours.

Feeding only one type of food

A varied diet helps enhance colour, immunity, and overall wellbeing.