PeekFishDiscover what makes each fish differentFishkeeping guides
EN ▾
True rummy-nose tetra — AI side-view illustration

True rummy-nose tetra

Petitella rhodostoma

Red stops before the shoulder; both peduncle borders carry black spots

Use the rear-body stripe and lower peduncle spot together to separate similarly named rummy-nose fish.

Adult length
Up to 5 cm
Water temperature
24–27 °C
Lifespan
5–6 years
pH
5.5–7
Hardness
2–15 dGH
Natural habitat
Native to the lower Amazon and Orinoco river basins.

Monitor fading, disturbance and feeding.

View comparison →

Appearance and identification

Head red stays before the shoulder. A dark rear stripe extends towards the anal fin, whose anterior base is marked. Trade labels are unreliable.

Same-species behaviour

Keep at least ten.

Space requirements

A 90 cm swimming length for ten or more.

Diet and feeding

Offer suitably small dry and frozen or live foods; check individual feeding.

Compatibility limits

Avoid dominating companions.

Aquarium environment

Keep an open swimming lane. Plants are generally undisturbed.

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

PeekFish · Ornamental fish

Privacy and analytics