X-Ray Tetra (Pristella maxillaris)
The X-Ray Tetra is a hardy, peaceful and attractive freshwater shoaling fish, named for its translucent body that gives it a delicate “x-ray” appearance. It is also recognised by its black, white and yellow fin markings, subtle silver sheen and active mid-water swimming behaviour. Also known as the Pristella Tetra or Golden Pristella Tetra in its colour forms, this species is an excellent choice for mature community aquariums and is more adaptable than many delicate soft-water tetras.
Common Name:
X-Ray Tetra. Also commonly referred to as Xray Tetra, Pristella Tetra, X-Ray Fish, Water Goldfinch or Golden Pristella Tetra for the gold variety.
Scientific Name (Latin):
Pristella maxillaris
| Specifications |
|---|
| Species: Pristella maxillaris |
| Size: Up to 2.5 inches (6 cm) |
| Water Temperature: 72–78°F (22–26°C) |
| Water pH: 6.0–7.0 |
| Hardness: 2–8 dGH |
| Compatibility: Peaceful, shoaling species; compatible with most community fish |
| Feeding: Omnivorous; accepts flake, pellet, and live foods |
| Lifespan: 5–7 years |
FAQ
What is the ideal water temperature for X-Ray Tetras?
The ideal water temperature for X-Ray Tetras is between 72 and 78°F (22–26°C).
Are X-Ray Tetras suitable for community tanks?
Yes, X-Ray Tetras are peaceful and compatible with most community fish, making them ideal for mature aquariums with a mix of species.
How big do X-Ray Tetras grow?
X-Ray Tetras grow up to 2.5 inches (6 cm) in length.
Alison Campbell –
I’ve had these tetras in my 20-gallon tank for six months. They’re active and colorful, especially in the mid-water zone. The translucent body is very striking under soft lighting. They don’t stress other fish and form a nice school. Easy to care for and feed.
Claire Hamilton –
The X-Ray Tetras are beautiful and peaceful. They swim together in a tight group, which adds movement to the tank. I noticed they prefer slightly softer water, so I adjusted the pH and hardness. They’ve been thriving since arrival.
Cameron Walsh –
These fish are a great addition to a community tank. Their unique appearance stands out without being flashy. They’re hardy and don’t require special care. I’ve kept them with guppies and neon tetras with no issues.