Red Base Tetra Care Guide
Hemigrammus stictus · Freshwater Fish

What Red Base Tetra look like
Hemigrammus stictus, commonly known as the Red Base Tetra, exhibits a laterally compressed, fusiform body shape, reaching a maximum adult size of approximately 2 inches (5 cm). The species displays sexual dimorphism, with males typically exhibiting a more vibrant coloration and slightly elongated fins compared to females. A distinctive feature of this species is the vivid red patch located at the base of the caudal fin, which is concentrated at the caudal peduncle, providing a striking contrast against its otherwise silvery body. The fish possesses a well-developed lateral line system, which aids in detecting water movements, and its dentition is adapted for an omnivorous diet, featuring small, conical teeth. The dorsal fin is situated towards the rear of the body, and the anal fin is elongated, contributing to its streamlined appearance, while the adipose fin is present, a characteristic feature of the Characidae family.
Behavior & temperament
The Red Base Tetra is a social fish that thrives in small to medium-sized schools, exhibiting a hierarchical structure within its group. It primarily occupies the mid to upper water column, where it engages in active swimming and foraging behaviors. This species is known for its peaceful temperament, making it an ideal candidate for community aquariums. During breeding, the Red Base Tetra is an egg scatterer, releasing adhesive eggs that adhere to vegetation in the aquarium or natural habitat. They exhibit minimal aggression, although males may display competitive behaviors during mating rituals.
Diet & feeding
In the wild, the Red Base 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; from Greek 'hemi' meaning half and 'grammus' meaning line); stictus (spotted or marked; from Greek 'stiktos').
Plan your tank
Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.
Keeping Red Base Tetra?
AquaLens identifies your fish and plants from a photo, tracks water chemistry, and flags health issues early — free on iOS and Android.



