05/21/2026
Pristella Tetra Information
The Pristella Tetra, also known as the X-Ray Tetra, is a hardy and peaceful freshwater schooling fish popular in community aquariums. Their transparent bodies and colorful fins make them a favorite for beginner and experienced aquarists alike.
Quick Facts
Scientific name: Pristella maxillaris
Common names: Pristella Tetra, X-Ray Tetra, Water Goldfinch
Type: Freshwater tetra
Origin: South America — coastal rivers of Venezuela, Guyana, and Brazil
Size: About 1.5–2 inches (4–5 cm)
Temperament: Peaceful and active schooling fish
Lifespan: Around 4–6 years
Minimum tank size: 15–20 gallons
Water temperature: 72–82°F (22–28°C)
pH range: 6.0–7.5
Diet: Omnivore — flakes, micro pellets, frozen foods, brine shrimp, daphnia
Care Tips
Keep them in groups of at least 6 for natural schooling behavior.
Very adaptable and beginner-friendly.
Prefer planted aquariums with open swimming space.
Compatible with peaceful community fish such as rasboras, corydoras, guppies, and small tetras.
Perform regular water changes to maintain good health and coloration.
Best Tank Mates
Corydoras
Harlequin Rasboras
Neon Tetras
Ember Tetras
German Blue Rams
Honey Gouramis
Empire Pet Fish
16413 Northern Blvd
Flushing, NY 11358
Tel: 718-321-1977
www.empirepetfish.com