Vampire Tetra Care Guide - Size, Diet & Aquarium Setup

The Vampire Tetra is a dramatic predatory characin with a long, streamlined body, a silvery sheen and a deeply forked tail. Its most famous feature is the pair of elongated lower-jaw teeth that project upwards when the mouth is closed, giving this species its striking common name. Despite being called a tetra, it is far larger and more powerfully built than the small community species usually associated with that group.

Vampire Tetras are native to northern and central South America, particularly the Amazon and Orinoco drainage systems. They occur in countries including Brazil, Colombia, Peru and Venezuela, inhabiting large tropical rivers and connected channels.

An adult Vampire Tetra needs a very large aquarium of at least 1,000 litres, with a footprint around 240 × 90 cm or larger; bigger systems are preferable for groups or mixed exhibits. Strong filtration, excellent oxygenation and secure covers are essential because this powerful fish produces considerable waste and can leap when startled. Use open swimming space with smooth sand or fine rounded gravel, subdued lighting and sturdy driftwood or rockwork arranged around the edges rather than across the central swimming area. All decor must be firmly positioned, and equipment should be protected from collisions.

Up to approximately 30 cm (12 in) in length. Females are generally reported to become slightly larger and deeper-bodied than males, although individual size varies and aquarium specimens are often smaller.

Vampire Tetras are obligate or near-obligate carnivores that naturally pursue smaller fish and other aquatic prey. Offer a varied diet of appropriately sized frozen or fresh seafood, such as fish fillet, prawns and squid, with occasional whole prey where its safety and nutritional suitability are certain. High-quality meaty pellets may be accepted by trained specimens. Avoid relying on feeder fish, which can introduce parasites and disease and do not provide a controlled diet.

Suitable tankmates must be too large to swallow and robust enough to cope with a fast, predatory fish. Large peaceful or moderately robust South American species, such as mature large catfish, sizable peaceful cichlids and other substantial characins, may work in a very spacious aquarium after careful observation. Avoid all small fish, shrimp and long-finned species, which are likely to be hunted, as well as highly aggressive fish that may harass or injure them. Vampire Tetras can also be kept singly or with carefully matched individuals, since adults may quarrel when cramped.

Vampire Tetras are not routinely bred in home aquariums, and reliable details of successful captive spawning are scarce. In the wild they are believed to reproduce seasonally in large rivers and flooded habitats, where eggs are released into open water. Their adult size, predatory behaviour and need for very spacious systems make breeding a specialist project rather than a practical community-aquarium goal.

Vampire Tetras show little obvious external sexual dimorphism. Mature females may be somewhat larger and fuller-bodied than males, particularly when carrying eggs, but reliable sexing by appearance alone is difficult.