Black Phantom Tetra Care Guide
Hyphessobrycon megalopterus · Freshwater Fish

What Black Phantom Tetra look like
The Black Phantom Tetra, scientifically known as Hyphessobrycon megalopterus, exhibits a deep-bodied, laterally compressed form with a maximum adult size of approximately 2.5 inches (6.35 cm). Males are particularly distinguished by their significantly enlarged, flowing black dorsal and anal fins, which are more pronounced than those of females, showcasing sexual dimorphism. The overall coloration is a silvery-grey with a subtle iridescence, complemented by a distinct dark comma-shaped marking located posterior to the gills, enhancing its visual appeal. This species possesses a well-defined lateral line system, which aids in detecting movement and vibrations in the water, and features small, sharp dentition suitable for a varied diet. The fins are well-developed, with the dorsal fin being notably elongated and the caudal fin exhibiting a forked shape, contributing to its agile swimming capabilities. Defensive adaptations include schooling behavior, which provides safety in numbers against potential predators.
Behavior & temperament
Hyphessobrycon megalopterus is a social species that thrives in groups, demonstrating a strong inclination towards schooling behavior. Typically found in the mid to upper levels of the water column, these fish exhibit a peaceful temperament, although they can display mild territoriality during breeding periods. Breeding behavior involves egg scattering, with females releasing eggs among dense vegetation, where they are fertilized by males. The species is generally non-aggressive and can coexist harmoniously with other small to medium-sized fish in a community aquarium setting, making them ideal for community tanks.
Diet & feeding
In the wild, the Black Phantom Tetra is an omnivore, 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
Hyphessobrycon (from Greek: hyphē, meaning 'web' and brykhos, meaning 'to break'; referring to the web-like structure of the fins) and megalopterus (from Greek: megas, meaning 'large' and pteron, meaning 'fin'; referring to the large fins 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 Black Phantom Tetra?
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