The X-ray tetra (Pristella maxillaris) is a freshwater fish of the family Characidae that grows up to 5 cm.
Description
The X-ray tetra is a small, glass-clear characin of the family Characidae (true tetras) reaching about 5 cm. The body is so transparent that the spine and swim bladder show through - hence the name. Behind the gill is a shiny shoulder spot and the dorsal and anal fins carry a striking black-yellow-white marking. The species lives in dense schools in quiet creeks, pools and swamps of northern South America and tolerates even slightly brackish water. As an omnivore it eats small zooplankton, insects, algae and plant matter. In the rainy season it spawns among fine water plants. Because of its transparent body, hardiness and peaceful nature it is a classic, popular aquarium fish.
Frequently asked questions
How do you recognise the X-ray tetra?
The X-ray tetra has a torpedo-shaped body, is mainly silver-grey and shows a plain pattern.
Where does the X-ray tetra live?
The X-ray tetra lives in fresh water and is mostly found around open water.
How big does the X-ray tetra get?
The X-ray tetra grows to a maximum of about 5 cm.
Is the X-ray tetra dangerous to humans?
No, the X-ray tetra is harmless to humans.
Is the X-ray tetra edible?
The X-ray tetra is not usually eaten.
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More from the family Characidae
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