Morphology Data of Cypselurus angusticeps
Identification keys
Main Ref. Nichols, J.T. and C.M. Breder Jr., 1935
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral elongated
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales

Pectoral fins almost uniformly grayish, varying in tone but neither hyaline nor blackish, with a narrow pale posterior edge broadening at the tip and toward the axil of the fin. Predorsal scales 28-30. Ventral origin equidistant from about or behind the middle of opercle and base of caudal. Head narrow and pointed for this genus, the snout equal to or slightly longer than eye. Teeth tricuspid. Interobital slightly concave; eye slightly infralateral.

Coloration: Dark above to below midline of side, pale below; dorsal very pale grayish; anal white; caudal uniform dusky; ventrals pale becoming slightly dusky in the center of their base.

Ease of Identification

Meristic characteristics of Cypselurus angusticeps

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
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total 13 - 17


Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   
Spines total
Soft-rays total 13 - 13
Adipose fin

Caudal fin

Attributes heterocercal; asymmetric

Anal fin(s)

Fins number 1
Spines total
Soft-rays total 8 - 9

Paired fins

Pectoral Attributes  transformed to 'aerofoils'
Pelvics Attributes  more or less normal
Position    abdominal  before origin of D1
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Comments & Corrections
Sign our Guest Book
Back to Search
cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17