Neon Tetra Care Guide
Paracheirodon innesi · Freshwater Fish
What Neon Tetra look like
The Neon Tetra (Paracheirodon innesi) is a diminutive, laterally compressed fish, typically reaching a maximum adult size of approximately 1.5 inches (4 cm). This species exhibits sexual dimorphism, with males being slightly smaller and more slender than females, which tend to be rounder and fuller-bodied, especially when gravid. The most striking morphological feature is the vivid electric blue horizontal stripe that extends from the eye to the adipose fin, contrasting sharply with the bright red coloration that covers the lower rear body from the midpoint to the caudal fin. The anterior lower body is silver, contributing to the fish's overall iridescent appearance. Neon Tetras possess a well-defined lateral line system, which aids in their sensory perception in the dimly lit waters of their natural habitat. Their fins are generally small and delicate, with a notable adipose fin present, and they lack any significant defensive adaptations, relying instead on their schooling behavior for protection against predators.
Behavior & temperament
Neon Tetras are inherently social fish, typically found in large, cohesive schools within their natural habitat, which is primarily the mid to upper levels of the water column in slow-moving streams and flooded forests. They exhibit a peaceful temperament, making them ideal for community aquariums, although they can display slight territoriality during breeding. Breeding behavior involves egg scattering, where females release eggs among plants, and males fertilize them externally. Their social hierarchy is relatively flat, with no strict dominance, allowing for a harmonious coexistence within groups. Neon Tetras are primarily active during dawn and dusk (crepuscular), and they thrive in well-planted environments that mimic their natural habitat.
Diet & feeding
In the wild, Neon Tetras are omnivorous, feeding on small invertebrates, plant matter, and detritus. In captivity, they require a varied diet that includes high-quality flake food, micro-pellets, and occasional live or frozen foods such as brine shrimp and daphnia to ensure optimal health and coloration.
Behind the name
Paracheirodon (Greek: "beside the hand", for the small adipose fin); innesi honors William T. Innes, the American aquarist and publisher — the species was named for him by ichthyologist George S. Myers in 1936.
Plan your tank
Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.
Keeping Neon Tetra?
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