Cruriraja rugosa
No common name
Collection Details
Specimens
Photos
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Records
Taxonomic Hierarchy
Chondrichthyes (Cartilaginous Fishes)
Rajiformes (Skates)
Rajidae (Skates)
Cruriraja
Cruriraja rugosa
Description
This species account was compiled from
Composite (multiple sources) (McEachran, J.D. and J.D. Fechhelm. Fishes of the Gulf of Mexico. University of Texas Press, Austin.)
and processed using AI-assisted text extraction.
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Characters
Diamond-shaped disc, one-fourth first dorsal fin base length, moderately long and acute snout, slender tail, preorbital length about 12% of TL, greatest snout angle about 87°, pectoral fin radials extend to about one-third length of snout, mouth almost transverse to slightly arched on each side of symphysis, 43 tooth rows in upper jaw, oronasal pit absent, anterior lobe of pelvic fin limblike and externally separated from posterior lobe, lateral margin of posterior lobe of pelvic fin free of posterior medial margin of pectoral fin, tail about 60% of TL with lateral folds, dorsal fins of similar size and shape, separated by interspace equal to about one dorsal fin base length, dorsal surface of disc and tail nearly uniformly covered with dermal denticles, moderate-sized thorns on rostrum, orbital rim, nuchal region, and posterior third of disc to origin of first dorsal fin, one thorn between dorsal fins
Brownish dorsally without spots or other markings, pale brownish to bluish ventrally
Distribution
Western North Atlantic, Gulf of Mexico
Gulf of Mexico
Habitat Associations
Depth range: 366 to 915 m
Biology
Maximum known size: 485 mm TL
Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).
Reproductive mode: dioecism; fertilization: internal (oviduct); nonguarders (open water/substratum egg scatterers); parental care: none. Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).
IUCN Red List Status: Least Concern (LC), assessed 2019-06-23. Resilience: Low (Fec assumed to be <100).
Phylogeny and Morphologically Similar Fishes
Distinguished from other species of the family by the combination of characters described
References
Bigelow and Schroeder 1958
Bigelow and Schroeder 1962
Bigelow and Schroeder 1965
Bigelow and Schroeder 1968b
Breder, C.M. and D.E. Rosen (1966) Modes of reproduction in fishes. T.F.H. Publications, Neptune City, New Jersey. 941 p.
McEachran, J.D. and K.A. Dunn (1998) Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia 1998(2):271-290.
Castro-Aguirre, J.L. and H. Espinosa Perez (1996) Listados faunísticos de México. VII. Catálogo sistemático de las rayas y especies afines de México. (Chondrichthyes: Elasmobranchii: Rajiformes: Batoideiomorpha). Universidad Nacional Autonoma de Mexico, Mexico. 75 p.
Comments On Cruriraja rugosa