Main Ref. | Viana, S.T.d.F., M.R. De Carvalho and U.L. Gomes, 2016 |
Appearance refers to | |
Bones in OsteoBase |
Specialized organs | |
Different appearance | |
Different colors | |
Remarks |
Striking features | |
Body shape lateral | elongated |
Cross section | angular |
Dorsal head profile | |
Type of eyes | |
Type of mouth/snout | |
Position of mouth | |
Type of scales | placoid scales |
Diagnosis |
This species is distinguished from its congeners by the following characters: dorsal fins markedly broad and lobe-like and with a short clasper groove, not reaching the rhipidion; differs from S. mitsukurii by having a slender body (vs. highly robust), pectoral-fin posterior margin is concave (vs. straight); interorbital space narrower, 8.8%, 6.8%-8.5% TL (vs. 9.3%, 9.1%-9.8% TL); inner clasper length 1.4 times pelvic-fin inner margin length (vs. 0.7-1.1 times); differs from species of the Squalus megalops group by the having a snout relatively long (vs. short), pectoral fins markedly broad (vs. often very narrow), pectoral free rear tips rounded and lobe-like (vs. often triangular); dermal denticles tricuspidate (vs. lanceolate); further differs from all congeners by having a much larger pectoral-inner margin length (10.5%, 9.2%-11.0% TL), except from S. acanthias (Ref. 109601). |
Ease of Identification |
Lateral Lines | Interrupted: No |
Scales on lateral line | |
Pored lateral line scales | |
Scales in lateral series | |
Scale rows above lateral line | |
Scale rows below lateral line | |
Scales around caudal peduncle | |
Barbels | |
Gill clefts (sharks/rays only) | |
Gill rakers | |
on lower limb | |
on upper limb | |
total | |
Vertebrae | |
preanal | |
total |
Attributes | |
Fins number | |
Finlets No. | Dorsal |
Ventral | |
Spines total | |
Soft-rays total | |
Adipose fin |
Attributes |
Fins number | |
Spines total | |
Soft-rays total |
Pectoral | Attributes |
Spines | |
Soft-rays | |
Pelvics | Attributes |
Position | |
Spines | |
Soft-rays |