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

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.

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