Classification / Names
Common names from other countries
Main reference
Size / Weight / Age
Max length : 200 cm WD male/unsexed; (Ref. 3168); common length : 90.0 cm WD male/unsexed; (Ref. 3168); max. published weight: 135.6 kg (Ref. 40637)
Length at first maturity
Lm 85.0, range 75 - 80 cm
Environment
Marine; brackish; reef-associated; depth range 0 - 53 m (Ref. 13608), usually ? - 4 m (Ref. 55205)
Climate / Range
Subtropical, preferred ?; 36°N - 4°S, 100°W - 37°W (Ref. 55205)
Distribution
Short description
Disk has sharp outer corners and irregular row of short spines on upper surface (Ref. 26938). Disk usually uniform dark brown above, grayer in young. Ventral finfold on tail long and high, dorsal finfold absent (Ref. 7251). Upper surface of disc gray, dark or olivaceous brown or olive green. Lower surface of disc white or whitish with an edging of gray or brown (Ref. 6902).
IUCN Red List Status (Ref. 115185)
Threat to humans
Traumatogenic (Ref. 4690)
Human uses
Fisheries: commercial; gamefish: yes
Tools
Special reports
Download XML
Internet sources
Estimates of some properties based on models
Phylogenetic diversity index
PD50 = 0.5078 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)
Trophic Level
3.5 ±0.0 se; Based on diet studies.
Resilience
Very Low, minimum population doubling time more than 14 years (Fec=3-4)
Vulnerability
Very high vulnerability (77 of 100)
Price category