Featherfin Tetra Care Guide
Hemigrammus unilineatus · Freshwater Fish
What Featherfin Tetra look like
Hemigrammus unilineatus, commonly known as the Featherfin Tetra, exhibits a slender, laterally compressed body that typically reaches a maximum adult size of approximately 2 inches (5 cm). This species displays sexual dimorphism, with males generally possessing slightly more elongated fins and a more vibrant coloration compared to females. The most distinctive morphological feature is the prominent white edging on the dorsal and anal fins, which gives them a feather-like appearance, hence the common name. The body is predominantly silver with a subtle dark stripe running longitudinally along the lateral line, which is well-developed and aids in sensory perception. The dentition is characterized by small, conical teeth suitable for an omnivorous diet, and the species lacks an adipose fin, a trait common to many characins. Defensive adaptations include schooling behavior, which provides safety in numbers against potential predators.
Behavior & temperament
The Featherfin Tetra is a social and gregarious species, typically found in small to medium-sized schools in its natural habitat. It primarily occupies the mid to upper levels of the water column, exhibiting pelagic tendencies. Breeding behavior is characterized by egg scattering, where females release eggs in open water, and males fertilize them externally. This species is generally peaceful and exhibits low aggression levels, making it an ideal candidate for community aquariums. They thrive in well-planted tanks where they can exhibit natural foraging behaviors and social interactions.
Diet & feeding
In the wild, the Featherfin Tetra is an omnivore, feeding on a varied diet that includes small invertebrates, plant matter, and detritus. In captivity, it requires a balanced diet consisting of high-quality flake food, supplemented with live or frozen foods such as brine shrimp and daphnia to ensure optimal health and coloration.
Behind the name
Hemigrammus (half line); unilineatus (single line).
Plan your tank
Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.
Keeping Featherfin Tetra?
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