Elasmobranchii (sharks and rays) > Myliobatiformes
(Stingrays) > Urotrygonidae
(American round stingrays)
Etymology: Urobatis: Greek,oura = tail + Greek, batis, batidos = a ray (Raja sp.) (Ref. 45335). More on author: Garman.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 1 - 30 m (Ref. 96339), usually - m (Ref. ). Subtropical; 0°C -
Eastern Central Pacific: southern Baja California, Mexico and the Gulf of California.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 42.0 cm TL male/unsexed; (Ref. 9265); common length : 30.0 cm TL male/unsexed; (Ref. 9265)
Found on shallow sand and mud bottoms, in sea grass beds, near rocky reefs, and in bays (Ref. 12951). Feeds on worms and amphipods during the day (Ref. 12951). Minimum depth from Ref. 58018.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
McEachran, J.D., 1995. Urolophidae. Rayas redondas. p. 786-792. In W. Fischer, F. Krupp, W. Schneider, C. Sommer, K.E. Carpenter and V. Niem (eds.) Guia FAO para Identification de Especies para lo Fines de la Pesca. Pacifico Centro-Oriental. 3 Vols. FAO, Rome. (Ref. 9265)
IUCN Red List Status (Ref. 124695)
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 22.3 - 26.9, mean 24 °C (based on 101 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02089 (0.00997 - 0.04380), b=3.08 (2.89 - 3.27), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic level (Ref. 69278
): 3.2 ±0.42 se; based on food items.
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years (Assuming fecundity<100).
Vulnerability (Ref. 59153
): High vulnerability (64 of 100) .