Long Finned Tetra Care Guide
Brycinus longipinnis · Freshwater Fish
What Long Finned Tetra look like
Brycinus longipinnis, commonly known as the Long Finned Tetra, exhibits a medium to large body size, typically reaching lengths of 4 to 5 inches (10 to 12.7 cm) in adulthood. The body is laterally compressed and characterized by a lustrous silver coloration, which serves as a backdrop for the striking morphological feature of elongated fin extensions, particularly pronounced in males. These males possess dramatically elongated dorsal, anal, and caudal fins, making them one of the most visually captivating tetra species. A distinctive dark stripe runs longitudinally along the body, enhancing the fish's aesthetic appeal. Sexual dimorphism is evident, with males showcasing more elaborate fin structures compared to the relatively shorter fins of females. Defensive adaptations include a streamlined body shape that allows for swift movements to evade predators. The species also features a well-defined lateral line system, which aids in detecting water movements and vibrations, an essential trait for navigating its environment.
Behavior & temperament
The Long Finned Tetra is primarily a social species, often found in small to medium-sized schools, which provides safety in numbers against potential predators. They inhabit the mid to upper levels of the water column, exhibiting a pelagic lifestyle. Breeding behavior is characterized by egg scattering, where females release eggs into the water column, allowing for external fertilization by males. This species displays a generally peaceful temperament, although males can exhibit territoriality during breeding periods, particularly when competing for mates. Their social hierarchy is fluid, with dominant males often displaying their fin extensions to attract females and assert their status within the group.
Diet & feeding
In the wild, the Long Finned Tetra is an omnivorous feeder, consuming a varied diet that includes small invertebrates, plant matter, and detritus. In captivity, they thrive on a balanced diet that includes high-quality flake food, live or frozen foods such as brine shrimp and daphnia, and plant-based supplements to ensure optimal health and coloration.
Behind the name
Brycinus (from Greek 'bryx' meaning 'to leap' or 'to jump'); longipinnis (from Latin 'longus' meaning 'long' and 'pinna' meaning 'fin').
Plan your tank
Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.
Keeping Long Finned Tetra?
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