Bullseye round stingray (Urobatis concentricus) care guide

Group
Marine fish
Other names
Reticulated round ray, Spot-on-spot round ray, Reef stingray
Family
Urotrygonidae (round rays)
Origin
Endemic to Mexico: shallow seas, sea-grass beds, coral reefs, estuaries, salt marshes and coastal lagoons.
Water
saltwater
Maximum size
47.5 cm
Temperature
24–27°C
pH
8.1–8.4
Hardness
Salinity SG 1.023–1.026
Minimum tank
680 litres
Care level
intermediate
Temperament
peaceful
Reef safe
no

Care

Tank: floor area matters far more than height. Give a deep bed of fine, smooth sand (at least 5 cm) to bury in, little or no rockwork, guarded heaters and pump intakes, a tight lid, and strong filtration and aeration, as rays are messy feeders. Avoid copper-based treatments, which rays and their relatives tolerate poorly. The list suggests at least 180 US gallons (about 680 litres). Water: 24–27 °C, pH 8.1–8.4, salinity SG 1.023–1.026. These are general marine aquarium figures for a tropical species, not species-specific values from the sources. Keep nitrate low and oxygen high. Behaviour: an occasionally available, hardy species. Its tail spine is about 27–30 mm long. Safety: the tail carries a venomous, serrated spine. A sting is very painful, though rarely dangerous to life. Never handle the ray by hand, net it with care, and get medical advice if stung. Conservation: IUCN Least Concern (2019), though threatened by habitat loss. Selling: our policies require the adult size and long-term tank needs to be stated clearly in the listing. Large fish must travel by a specialist live-animal courier (see the Livestock shipping guide). Sources: Wikipedia, List of marine aquarium fish species (en.wikipedia.org/wiki/Listofmarineaquariumfishspecies); Wikipedia (en.wikipedia.org/wiki/Urobatisconcentricus). Checked October 2026.

Diet

Mainly small fish and bottom crustaceans in the wild. Offer chopped fish, shrimp, squid and clam with feeding tongs.

Compatibility and tank mates

Not reef safe: eats small fish and crustaceans. Keep only with fish too large to swallow that will not nip it.

Last updated 8 October 2026. Community-edited care guide on Aquatic-Auctions.

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