The Black Neon Tetra (Hyphessobrycon herbertaxelrodi) is a peaceful, hardy, and visually striking schooling fish native to the clearwater and tributary streams of South America. Characterized by a deep black body overlaid with a glowing, iridescent white-to-chartreuse neon stripe, this species adds a sophisticated contrast to community freshwater aquariums.

Short Description & Highlights

Hyphessobrycon herbertaxelrodi is widely celebrated as one of the best choices for beginner aquarists due to its peaceful temperament, resilience, and adaptability to a wide range of water conditions. Growing to an adult size of about 1.5 inches, these active schooling fish thrive when kept in groups, displaying fascinating social behaviors that bring a freshwater setup to life.

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Detailed Beginner Care Guide

1. Tank Requirements & Schooling Nature

Because Black Neon Tetras are strictly schooling species, they must never be kept alone. Keeping a minimum group of 6 to 8 individuals ensures they feel secure, reduces stress, and prompts them to display their most vibrant coloration and active social dynamics. A standard aquarium of at least 20 gallons (75 liters) provides adequate horizontal swimming space for a healthy school.

2. Aquascaping & Lighting

To help these fish feel at home and showcase their glowing neon stripes, replicate their natural shaded river habitats. Use a dark substrate, incorporate driftwood, and include plenty of live aquatic plants (such as Java Fern or Anubias). Subdued or moderate lighting enhances their striking contrast, though they adapt readily to standard aquarium hoods.

3. Diet and Feeding

Hyphessobrycon herbertaxelrodi accepts standard commercial foods effortlessly. Feed them a high-quality nano flake or micro pellet as a staple, and supplement their diet regularly with live or frozen treats like baby brine shrimp, cyclops, or daphnia to support optimal health and coloration.