Black Neon Tetra

The Black Neon Tetra is a small freshwater fish native to slow-moving tributaries and shaded forest streams of the Rio Taquari and Rio Paraguay drainages in Brazil. Despite the similar name, it is not closely related to the well-known Neon Tetra, though both belong to the characin family and share a schooling, small-bodied lifestyle. Its most distinguishing feature is a bold black horizontal stripe running the length of the body, paired with a bright, shimmering silvery-white line directly above it that catches light as the fish moves. This striking two-tone pattern, combined with its calm temperament and tolerance of varied water conditions, has made it a long-popular addition to community aquariums, where it schools readily with other small peaceful fish.

• Bold black horizontal stripe running from behind the gill cover to the base of the tail
• Bright, shimmering silvery-white stripe directly above the black stripe
• Compact, moderately deep-bodied silhouette compared to slimmer tetra species
• Translucent to pale silvery fins with little additional color
• Small adipose fin present
• Similar species: Neon Tetra (Paracheirodon innesi) has blue and red coloration rather than black and white, and a slimmer body shape.

Black Neon Tetras are native to the Rio Taquari and Rio Paraguay basins in Brazil, inhabiting slow-moving, often shaded streams and tributaries within forested lowland areas. They favor soft, slightly acidic water with substantial leaf litter and overhanging vegetation that filters sunlight and provides cover. As a schooling species adapted to still or slow-flowing water, they are typically found in calm backwaters and forest streams rather than fast-flowing river channels.

Black Neon Tetras are peaceful schooling fish that move in coordinated groups through shaded, vegetated stream habitat, feeding on small insects, zooplankton, and other tiny invertebrates. Schooling behavior offers protection from predators and is more pronounced in larger groups, with individuals displaying calmer, more natural behavior when kept together. They are generally undemanding regarding water conditions relative to some other small tetras, tolerating a moderate range of temperature and chemistry. Breeding in the wild involves scattering adhesive eggs among fine vegetation or leaf litter in calm water, with no parental care provided after spawning.