Black-belt Tetra Care Guide
Hemigrammus kuroobi · Freshwater Fish
What Black-belt Tetra look like
The Black-belt Tetra, scientifically known as Hemigrammus kuroobi, exhibits a laterally compressed, fusiform body shape that typically reaches a maximum adult size of approximately 2 inches (5 cm). This species displays sexual dimorphism, with males generally being slightly smaller and exhibiting more vibrant coloration than females, particularly during breeding periods. A distinctive morphological feature is the broad, dark midbody band that encircles the fish like a belt, contrasting sharply with its silvery body. The fins are generally transparent with subtle hints of coloration, and the species possesses a well-defined lateral line that aids in hydrodynamic sensing. Defensive adaptations include a schooling behavior that provides safety in numbers, as well as a streamlined body shape that allows for quick evasive maneuvers from potential predators.
Behavior & temperament
Hemigrammus kuroobi is a gregarious species, often found in large schools in its natural habitat, which promotes social interaction and safety against predation. It primarily occupies the mid to upper water column, exhibiting a pelagic dwelling behavior. The Black-belt Tetra engages in egg scattering during breeding, with females releasing eggs in open water where males fertilize them externally. This species is generally peaceful and exhibits low aggression levels, making it an ideal candidate for community tanks, although males may display mild territoriality during breeding.
Diet & feeding
In the wild, the Black-belt Tetra is an omnivore, feeding on a varied diet that includes small invertebrates, plant matter, and detritus. In captivity, it thrives on high-quality flake foods, supplemented with live or frozen foods such as daphnia and brine shrimp to ensure a balanced diet.
Behind the name
Hemigrammus (half line; referring to the lateral line being less developed than in other genera); kuroobi (black belt; referring to the prominent dark band on the body).
Plan your tank
Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.
Keeping Black-belt Tetra?
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