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Paratrygon aiereba — dorsal top-down AI illustration, head up, complete disc and tail down; not a photograph
Dorsal catalogue view · Species side view in the aquarium

Discus ray

Paratrygon aiereba

Concave front margin and dark preorbital marks.

A grey to light-brown disc bears irregular dark marks, with a more evident median front-margin concavity in adults. Most specimens have paired large preorbital blotches.

Adult size
Up to 80 cm (disc width)
Natural habitat
Common in shallow areas and near river banks.

Males reach 60.3cm DW, so it is no small-tank fish. Avoid contact with the sting.

View comparison →

Appearance and identification

Old "discus ray" labels now cover several separate species, so check locality, lateral tail spines and other morphology together.

Floor and movement space

Allow for the adult disc, complete tail and turning routes.

Aquarium environment

The broad disc needs open floor and turning routes.

Compatibility limits

Small fish or bottom companions are not automatically safe; watch for harassment of the disc and tail.

Sources

researcharchive.calacademy.org ↗ 2026-10-22

www.fishbase.se ↗ 2026-10-25

new.scielo.br ↗ 2026-10-22

new.scielo.br ↗ 2026-10-22

cites.org ↗ 2026-10-22

doi.org ↗ 2026-10-22

www.mapress.com ↗ 2026-10-22

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