Rosette river stingray

Potamotrygon schroederi

Yellow rosette clusters and a banded tail; check flower-ray trade identities.

Dark disc with yellow rosette clusters, simpler pale rim spots and alternating tail bands. Native to the Orinoco and Negro basins.

Water temperature: 20–29 °C
pH: 6–7.5
Hardness: 1–12 dGH

Natural habitat: Inhabits river sandbanks, shallows and slow tributaries over mud or sand, also entering flooded forest and flood-recession lakes and ponds.

An adult can exceed half a metre across the disc, before considering its tail. The sting is hazardous and small fish or shrimp may be prey.

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Appearance and identification

The 2011 description separates Nanay-basin tigrina, with interwoven yellow-orange vermiculations, from this rosette-patterned species. Flower ray alone is not an identification; check provenance and fuller morphology.

Floor and movement space

Plan 240 × 90 × 75 cm for an adult or pair. Keep 20–29°C, preferring the upper end, pH 6–7.5 and 1–12 dGH.

Aquarium environment

Keep open routes for the broad disc and long tail. Dense planting is not automatically suitable.

Diet and feeding

Offer varied aquatic animal foods and watch that new individuals actually feed.

Compatibility limits

Adult floor use and harassment of the disc matter.

Same-species behaviour

Keep separation options and monitor feeding competition, chasing and disc biting.

Sources

shark-references.com ↗ 2026-10-22