Pristella Maxillaris

Datasheet

General Description

Pristella Maxillaris, commonly known as the X-Ray Tetra, is a popular and easily obtainable species in the aquarium trade. It is a peaceful and hardy fish, making it an excellent choice for newcomers. The selectively-bred "golden" strain, a semi-albino variant, is also available. This tetra is a shoaling species and should ideally be kept in groups of at least 6 individuals.

Aquarium Setup

The X-Ray Tetra is adaptable to various tank conditions but thrives best in a heavily planted tank setup. For an optimal display, a biotope tank mimicking its natural habitat with river sand, driftwood, dried leaves, and dim lighting is recommended. This species can look dull in sparse setups and prefers a more natural environment for vibrant colors.

Behaviour

Known for its peaceful nature, P. maxillaris does not fare well with aggressive or significantly larger tank mates. It is best kept with other South American species or in a general community with smaller fish like rasboras, barbs, and loaches. Being a shoaling species by nature, X-Ray Tetras display their best behavior and coloration when kept in the company of their own kind.

Feeding and Diet

As a micropredator, X-Ray Tetras primarily feed on small invertebrates in the wild. In captivity, they accept a variety of foods including dried flakes, granules, live, and frozen foods like Daphnia or Artemia. A balanced diet consisting of a mix of these food types ensures their nutritional needs are met.

Reproduction & Dimorphism

Breeding X-Ray Tetras is relatively straightforward, with a preference for soft water conditions during spawning. Rearing the fry, however, can be challenging. Providing a dedicated tank with appropriate conditions such as dim lighting, fine-leaved plants, and soft, acidic water is crucial for successful breeding. Mature females are typically larger and stockier than males.

Habitat and Distribution

Native to coastal waters of South America, specifically Venezuela, Guyana, Suriname, French Guiana, and northern Brazil, the X-Ray Tetra thrives in clearwater streams and flooded savannah areas during the rainy season. While wild specimens are rare due to commercial breeding, these tetras are widely available in the aquarium trade, often originating from Far East or Eastern Europe breeding facilities.