Phoenix Tetra Care Guide
Hemigrammus filamentosus · Freshwater Fish
What Phoenix Tetra look like
The Phoenix Tetra (Hemigrammus filamentosus) is a small, laterally compressed fish, typically reaching a maximum adult size of approximately 2 inches (5 cm). Its body exhibits a silvery sheen, adorned with striking reddish-orange fins that are particularly pronounced in mature individuals. Males are distinguished by their elongated dorsal fin filaments, which can trail elegantly behind them, enhancing their visual appeal during courtship displays. The species possesses a well-defined lateral line, contributing to its sensory capabilities in the aquatic environment. Notable defensive adaptations include its schooling behavior, which provides safety in numbers, and its ability to quickly dart away from potential predators. The overall morphology of the Phoenix Tetra is characterized by a fusiform shape, which aids in agile swimming and maneuverability in its natural habitat.
Behavior & temperament
Phoenix Tetras are social fish that thrive in groups, exhibiting a strong tendency to school, which is essential for their well-being and stress reduction. They typically inhabit the mid to upper water column in their natural environments, often found in slow-moving streams and flooded forests of South America. Breeding behavior is characterized by being egg scatterers, where females release eggs in open water, and males fertilize them externally. Their temperament is generally peaceful, making them suitable for community tanks, although they can display mild territoriality during breeding periods. The social hierarchy within a school is fluid, with no strict dominance, allowing for a harmonious coexistence among individuals.
Diet & feeding
In the wild, Phoenix Tetras are omnivorous, feeding on a varied diet that includes small invertebrates, plant matter, and detritus. In captivity, they thrive on high-quality flake foods, supplemented with live or frozen foods such as brine shrimp and daphnia, to ensure a balanced diet.
Behind the name
Hemigrammus (half-line; refers to the lateral line system); filamentosus (thread-like; referring to the elongated fin filaments of males).
Plan your tank
Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.
Keeping Phoenix Tetra?
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