Morphology Data of Etmopterus evansi
Identification keys
Main Ref. Last, P., G.H. Burgess and B. Séret, 2002
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 oval
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales placoid scales

Body slender. Dorsal and ventral coloration strongly contrasted; dots and dashes absent on upper half; dark ventral saddle on posterior third of caudal peduncle; prominent dark bands at the tip and through mid caudal fin. Eyes rather narrow; upper eyelid with pale naked patch. Caudal peduncle elongate (18.9-21.8% TL). Denticles extremely dense, very thin, delicate, arranged in poorly defined longitudinal rows. Flank marking base under or slightly forward of second dorsal spine; its posterior branch barely reaching free rear tip of second dorsal fin; central caudal marking absent; finger of caudal base marking very long, more than 7% TL. Monospondylous centra 37-38 (Ref. 45056).

Ease of Identification

Meristic characteristics of Etmopterus evansi

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
preanal 53 - 59
total 76 - 82


Dorsal fin(s)

Fins number
Finlets No. Dorsal   
Spines total
Soft-rays total
Adipose fin

Caudal fin

Attributes heterocercal; more or less normal

Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  more or less normal
Pelvics Attributes  
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