Morphology Data of Uraspis helvola
Identification keys
Main Ref. Jiménez Prado, P. and P. Béarez, 2004
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors

Descriptive characteristics of juvenile and adult

Striking features none
Body shape lateral fusiform / normal
Cross section
Dorsal head profile clearly convex
Type of eyes more or less normal
Type of mouth/snout more or less normal
Position of mouth
Type of scales

Description: Dorsal charcoal, grey or black, ventral paler or silver; vertical bars 6-7 narrow dark greyish, sometimes faint, separated by lighter spaces; mouth blue black; tongue, palate, and floor of mouth white or cream. Body oblong and compressed; profile, dorsal more convex than ventral. Snout widely rounded. Ventral area of chest up to origin of pelvic fins scaleless. LL scutes strong 23 to 40. (Ref. 55763, 90102)

Ease of Identification

Meristic characteristics of Uraspis helvola

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 0
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 13 - 17
on upper limb 5 - 8
total 19 - 24


Dorsal fin(s)

Attributes no striking attributes
Fins number 2
Finlets No. Dorsal   
Spines total 9 - 9
Soft-rays total 25 - 30
Adipose fin

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number 2
Spines total 3 - 3
Soft-rays total 19 - 22

Paired fins

Pectoral Attributes  more or less normal
Pelvics Attributes  more or less normal
Position    abdominal  before origin of D1
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17