X-ray tetra
Introduction
The X-ray tetra (Pristella maxillaris), also known as the golden pristella tetra, is a captivating freshwater fish renowned for its translucent body that reveals its internal organs, giving it an "X-ray" appearance. This unique feature, combined with its peaceful nature and adaptability, makes it a popular choice among aquarists of all experience levels. With proper care, X-ray tetras can thrive in home aquariums, adding a dynamic and visually appealing element to any tank.
What makes the X-ray tetra a popular choice for aquariums?
Its distinctive transparent body and peaceful temperament make it an attractive and easy-to-care-for addition to community tanks.
Is the X-ray tetra suitable for beginner fishkeepers?
Yes, due to its hardy nature and straightforward care requirements, it's an excellent choice for beginners.
Care and Environment
Providing optimal care for X-ray tetras involves creating an environment that closely mimics their natural habitat. A minimum tank size of 40 liters is recommended to accommodate a small group, as these fish are social and thrive in schools. Maintaining water temperatures between 24°C and 28°C, with a pH range of 6.0 to 7.5, is ideal. Regular water changes and efficient filtration are essential to keep the water clean and free from harmful toxins.
In terms of diet, X-ray tetras are omnivorous and should be fed a varied diet that includes high-quality flake or pellet food, supplemented with live or frozen foods like brine shrimp, daphnia, or bloodworms. Incorporating live plants, such as Java fern or Anubias, along with driftwood and rocks, provides hiding spots and mimics their natural environment, contributing to their overall well-being.
How many X-ray tetras should be kept together?
It's best to keep them in groups of at least six to promote natural schooling behavior and reduce stress.
What type of filtration is suitable for X-ray tetras?
A gentle filtration system that doesn't create strong currents is ideal, as they prefer calm waters.
Can X-ray tetras adapt to different water conditions?
Yes, they are adaptable but thrive best in slightly acidic to neutral water with stable parameters.
Origin and Habitat
Native to the Amazon and Orinoco River basins, as well as coastal rivers in the Guianas, X-ray tetras inhabit a variety of water bodies, including rivers, floodplains, and brackish environments. They are often found in areas with dense vegetation and soft, slightly acidic to neutral waters. This adaptability allows them to thrive in diverse conditions, contributing to their popularity in the aquarium trade.
Where are X-ray tetras naturally found?
They are native to South America's Amazon and Orinoco River basins and coastal rivers in the Guianas.
Do X-ray tetras live in freshwater or brackish water?
They primarily inhabit freshwater but can tolerate slightly brackish conditions.
Temperament and Compatibility
X-ray tetras are peaceful, schooling fish that thrive in community aquariums. They should be kept in groups of at least six to encourage natural behaviors and reduce stress. Compatible tank mates include other small, non-aggressive species such as neon tetras, guppies, and corydoras catfish. It's advisable to avoid housing them with larger or aggressive fish, as X-ray tetras may become stressed or preyed upon.
Are X-ray tetras aggressive?
No, they are known for their peaceful nature and are suitable for community tanks.
What are suitable tank mates for X-ray tetras?
Other small, peaceful fish like neon tetras, guppies, and corydoras catfish make good companions.
How many X-ray tetras should be kept together?
Keeping them in groups of at least six is recommended to promote natural schooling behavior.
Interesting Facts
One of the most intriguing aspects of the X-ray tetra is its semi-transparent body, which allows a view of its internal organs and spine, a feature that has fascinated aquarists and scientists alike. Additionally, unlike many other tetras, X-ray tetras can tolerate slightly brackish water conditions, showcasing their remarkable adaptability. In the wild, they exhibit seasonal migrations to floodplains and marshes during the rainy season for breeding, a behavior that can be replicated in captivity to encourage spawning.
Why are they called X-ray tetras?
Their translucent bodies reveal internal structures, resembling an X-ray image.
Can X-ray tetras live in brackish water?
Yes, they can tolerate slightly brackish conditions, unlike many other tetra species.
How do X-ray tetras breed in the wild?
They migrate to floodplains and marshes during the rainy season to spawn.
Sources
All information in this article has been gathered from the following reputable sources:
Overview
Recommended Tank Size 15.9 Gallon (for groups of 6 or more) |
Minimum Group Size 6 |
Minimum Tank Volume 10.6 Gallon |
Maximum Adult Length 2 inch |
Average Adult Length 1.6 inch |
Shoaling (6+ required) Yes |
Preferred Water Type Freshwater, slightly acidic to neutral |
Temperature Range (°C) 24–28 |
pH Range 6.0–7.5 |
Water Hardness (dGH) 2–15 |
Typical Lifespan (years) 3 years |