The size of the x-ray tetra is about 1.6-1.9 in (4-4.8 cm) in length. Other animals are also a threat, including amphibians such as frogs as well as various bird and snake species. In a well-kept aquarium, the penguin tetra size can reach around 2.5 in (6.3 cm), with an average size of 1.2 in (3 cm), making it one of the larger members of tetra species. Larger predatory fish will hunt virtually all species of tetra, including the X-ray tetra. They will also feed on some plant and algal material to supplement their diet, but are primarily predatory.ĭue to their small size, they are also susceptible to predation by a wide range of other species. Various small species of worms, aquatic insects and their larvae, and small shrimp-like animals are commonly hunted by the tetra. The X-Ray fish is omnivorous, feeding on a wide variety of animals and plants. In a fish tank, some individuals can live up to 7-8 years. Most individuals live for 3-4 years in the wild. At this point they can access more and more food sources and develop their characteristic adult markings soon after, reaching sexual maturity by about 5-8 months of age. Fry will hatch as soon as 24 hours later and are free-swimming within a few days. While the grasslands and marshes are flooded, the X-ray fish will scatter 300-400 eggs amongst the blades of grass and other vegetation. It is during this season that the X-Ray fish has evolved to breed. Females are slightly larger and heavier than males. This opens up access to breeding grounds and increases the availability of food in general. The X-ray tetra is a small fish, growing to a maximum length of around 4.5 cm (1.77 in.). They are also able to thrive in more typical freshwater environments, normally in streams and tributaries during the dry season and in flooded marshlands during the rainy season.ĭuring the wet season, the flooded environments allow the X-Ray fish to access environments otherwise not available to it. The X-Ray Tetra is a small species of schooling Fish that is naturally found in the Amazon Rivers coastal waters in South America.
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