X-ray Tetra Tropical Fish Information

Pristella maxillaris
X-ray Tetra
Behaviour Peaceful and shoaling
Typical size 4cm
Max size 5cm
Tank Area Middle, all
Min Tank Size 60cm
Min Number 4
Temp Min: 24℃ Max: 27℃
Feeding Flake, frozen, live foods
pH Range 6-8.5
Hardness vs,s,m,h
X-ray Tetra Pristella maxillaris
  • X-ray Tetra Pristella maxillaris - thumbnail
  • X-ray Tetra Pristella maxillaris - thumbnail

X-ray Tetra (Pristella maxillaris)

X-ray Tetra Tropical Fish Learn all about the X-ray Tetra's feeding habits and food types, its behaviour, its origins, its natural habitats, is it male or female, breeding advice and information, suitable tank mates, its sizing and growth range, minimum tank size, water PH and more. Use our fish community creator tool to plan your tank set up and ensure that the X-ray Tetra is the right fish for your aquarium.

The X-ray tetra is a long-standing popular aquarium fish and is readily available, being mainly bred in captiveity. The fishes understated body colour and bold yellow-black-white fin markings give it a nice appearance in the aquarium. X-rays are typically peaceful shoaling tetras well suited to a community aquarium. The fish require areas of vegetation and do not like brightly lit areas so a dark substrate and some cover is appreciated. Soft water is not essential but combined with dark areas, will allow the fish to show its best colours. A varied diet, including some vegetable and meaty matter as well as standard flake, will also help improve health and colour. Although peaceful, like other tetras of similar shape, X-rays may on occasion nip at very fancy finned fish.

Family Characidae (Characins) | Synonyms Aphyocharax maxillaris, Holopristis riddlei, Pristella riddlei | Other names Pristella Tetra, Water Goldfinch | Origin South America; Amazon | Breeding Egg scatterer, spawning is relatively easy in vegetated aquaria | Natural Water Conditions pH 6-8, hard | Natural Habitat Calm, densely vegetated waters | Sexing Males are thinner than females. Females have a more rounded swim-bladder.

X-ray Tetra Help and Advice

If you have a question about keeping X-ray Tetra's then please use our X-ray Tetra help forum. Join 100's of other fish enthusiasts with 1000's of years experience between them caring for and keeping fish like these.


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Check Tankmates for the X-ray Tetra fish species

Create a test community that includes the X-ray Tetra fish species and other types you'd like to introduce - Assess tank size suitability based on filter type and volume, possible negative interactions and warnings.

Please check your water type for compatibility with your fish, which can be found on the X-ray Tetra information box.
Tank Details
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If you'd like to talk about the "X-ray Tetra" with our users, then we have a buzzing community of fish enthusiasts where you can talk about tank issues, X-ray Tetra fish behaviour, X-ray Tetra tank stocking and any other issues related to the X-ray Tetra fish or other types you may have.

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