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Petitella georgiae — AI side-view illustration

False rummy-nose tetra

Petitella georgiae

A clear rear-body stripe without a separate lower peduncle spot

Red is concentrated on the head, followed by a silver body and a boldly patterned forked tail. Trade names frequently mix three species.

Adult length
Up to 3.9 cm (standard length, without the tail fin)
Water temperature
22–26 °C
Lifespan
5–6 years
pH
5.5–7
Hardness
1–12 dGH
Natural habitat
Native to the upper Amazon in Peru and the Purus, Negro and Madeira river basins.

Avoid companions that dominate feeding or repeatedly disturb the group.

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Appearance and identification

Compared with bleheri, the rear-body stripe is clearer and head red does not conspicuously extend past the gill cover. A missing separate lower posterior peduncle spot helps separate it from rhodostoma. Use several characters.

Same-species behaviour

Keep ten or more.

Space requirements

At least 90 cm tank length for ten or more fish.

Diet and feeding

Offer food small enough for the mouth: fine dry foods and small frozen or live foods. Observe ingestion.

Compatibility limits

Watch feeding competition and disturbance.

Aquarium environment

Plants, roots and subdued light can leave open swimming room.

Sources

www.fishbase.se ↗ 2026-10-25

www.seriouslyfish.com ↗ 2026-10-23

www.aquariumglaser.de ↗ 2026-10-23

www.scielo.br ↗ 2026-10-23

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