Hyphessobrycon eques – Serpae Tetra (3–3.5 inches)

Overview

The Serpae Tetra (Hyphessobrycon eques) is a striking freshwater fish known for its deep red body, accented with a distinctive black patch near the gills and dark-tipped fins. A lively schooling fish, it brings a splash of color and activity to community aquariums. Though generally peaceful, it can sometimes nip fins if kept in too small groups or with long-finned species.

Size

• Adult length: ~3–3.5 inches (7–9 cm).

• Compact, schooling mid-level swimmer.

Behavior & Social Needs

• Shoaling species: Should be kept in groups of at least 6–8, though larger schools (10+) reduce aggression and display better coloration.

• Active, energetic swimmers that thrive in planted community setups.

• Best tankmates include other tetras, rasboras, and peaceful barbs. Avoid angelfish or slow, long-finned fish.

Tank Conditions

• Tank size: 20 gallons minimum for a proper school.

• Temperature: 72–79°F (22–26°C).

• pH: 5.0–7.8, with slightly acidic to neutral ideal.

• Setup suggestions: Dense planting with driftwood or rocks for cover, open areas for swimming, and subdued lighting to enhance colors.

Diet

• Omnivorous: Eats flakes, micropellets, and will eagerly take live or frozen foods like brine shrimp, bloodworms, and daphnia.

• A varied diet keeps their red coloration vibrant.

Lifespan & Hardiness

• Hardy and beginner-friendly when kept in stable, clean water.

• Average lifespan: 5–7 years under good care.