Hyphessobrycon peugeoti

Carmine colour and a long dorsal filament in mature males

A red wash covers silver flanks, with a dark peduncle blotch. Mature males have an elongated dorsal and a straighter anal margin.

Adult length: Up to 3.2 cm (standard length, without the tail fin)

Natural habitat: Inhabits tributaries of the middle Juruena in the upper Tapajós basin, Brazil.

Red colour and a black tail are variable display states.

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Appearance and identification

Its carmine colour contrasts with golden heliacus and loweae. A mature male dorsal can reach the tail base when depressed. Colour changes with condition; the tail can blacken during courtship.

Same-species behaviour

Peaceful; monitor interactions.

Compatibility limits

Assess companion size and actual interactions.

Aquarium environment

Strong shade can improve colour.

Sources

pdfs.semanticscholar.org ↗ 2026-10-23