Hemigrammus Unilineatus

Datasheet

General Description

The Featherfin Tetra (Hemigrammus Unilineatus) is a peaceful species that thrives best in a community tank setting with other South American species. This tetra is part of the Characidae family and can grow up to approximately 5.0cm in size. Its natural habitat spans across various locations in northern South America, such as Venezuela, Guyana, Suriname, French Guiana, Trinidad and Tobago, Peru, and Brazil.

Aquarium Setup

For optimal care, a minimum tank size of 70 litres is recommended. The ideal tank setup includes a substrate of river sand, driftwood branches, twisted roots, and dried leaves to mimic its natural biotope. Aquatic plants are not essential for this species. Maintaining dim lighting and utilizing peat in the filter to simulate blackwater conditions can enhance the environment. Water parameters should be kept at a pH of 5.5-7.5, hardness of 1-20 dH, and a temperature range of 23-28°C.

Behaviour

Featherfin Tetras are shoaling species by nature and should ideally be kept in groups of at least 6, preferably 10 or more, for their well-being. They coexist well with other peaceful fish such as other Hemigrammus or Hyphessobrycon species, pencil fish, dwarf cichlids, and small Loricariids. Maintaining them in a community tank with suitable tank mates ensures their comfort and natural behavior.

Feeding and Diet

Feasting mainly on small invertebrates in the wild, Featherfin Tetras are not picky eaters in captivity. Their diet should consist of a mix of dried flakes, granules, small live, and frozen foods. Providing a diverse diet ensures their nutritional needs are met, promoting their overall health and vitality.

Reproduction & Dimorphism

Breeding Featherfin Tetras can be achieved by setting up a separate breeding tank with proper conditions, including dim lighting and soft, acidic water. They can be spawned in groups or pairs, with careful attention to egg removal as adults may consume them. Fry should be fed appropriately until they are large enough to accept microworms or brine shrimp nauplii. Sexing mature fish is possible by examining the swim bladder, with males typically having a pointed bladder compared to females.

Habitat and Distribution

In the wild, Featherfin Tetras inhabit various biotopes, including slow-moving rivers, tributaries, oxbow lakes, and ditches. They adapt to environments with clear or murky water conditions, showcasing their resilience across different habitats in their native range.