Neon Tetra (Paracheirodon innesi)

The Neon Tetra (Paracheirodon innesi) is one of the most famous, colorful, and popular freshwater aquarium fish in the world. Known for their brilliant iridescent blue and bright red stripes, these small schooling fish bring vibrant energy to any community tank.

Quick Species Overview

Scientific Name: Paracheirodon innesiAdult Size: 3.5 to 4 cm (1.5 inches)

Lifespan: Up to 5 years with proper care

Temperament: Peaceful community fish

Minimum Group Size: At least 6 fish (10 to 15 is ideal for schooling)

Tank Setup & Water Parameters

Neon tetras originate from soft, acidic blackwater streams under dense forest canopies in the Amazon basin. Replicating this dark, sheltered habitat keeps them healthy and brings out their best colors.

Minimum Tank Size: 10 gallons (38 liters) for a small group.

Temperature: 72°F to 78°F (22°C to 26°C).

pH Range: 4.0 to 7.5 (Prefers slightly acidic water around 6.0 to 7.0).

Water Hardness: Soft water, 1 to 12 dGH.

Aquarium Decor: Use a dark substrate and plenty of live background plants like Anubias and Cryptocoryne. Add driftwood to create natural shade and hiding spots, leaving the center open for swimming.

Diet & Feeding

Neon tetras are omnivores that naturally feed on small insects, worms, and crustaceans. In captivity, they are easy to feed but thrive on a varied diet.

Staple Foods: High-quality micro-pellets and crushed tropical flakes.

Treat Foods: Weekly feedings of frozen or live Daphnia, baby brine shrimp, and Cyclops.

Feeding Style: They swim and feed mostly in the middle water layer. Ensure food particles are small enough to fit in their tiny mouths.Ideal

Tank Mates

Because they are small and timid, never keep neon tetras with large, predatory, or aggressive fish like Angelfish or large cichlids, which will eat them. Excellent peaceful companions include:

Other small tetras (such as Rummy-nose or Cardinal tetras)

Harlequin or Chili rasboras

Corydoras catfish (excellent bottom-dwellers to clean up leftovers)

Honey gouramis

Aquatic invertebrates like Cherry shrimp, Amano shrimp, and snails