Morphology Data of Dicrolene nigra
Identification keys
Abnormalities
Main Ref. Kong, I., R. Meléndez and G. Henriquez, 1988
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs no special organs
Different appearance
Different colors
Remarks

Descriptive characteristics of juvenile and adult

Striking features long whip-like tail
Body shape lateral elongated
Cross section compressed
Dorsal head profile more or less straight
Type of eyes more or less normal
Type of mouth/snout more or less normal
Position of mouth sub-terminal/inferior
Type of scales
Diagnosis

Snout rather blunt; eye diameter almost as long as snout; opercular spine strong and straight; hind margin of preopercle usually with 3 sharp spines; 1 median (long and narrow) and a pair of basibranchial tooth patches; pseudobranchial filaments 2 or 3 (Ref. 34024); 6-9 developed rakers on anterior arch (Ref. 38374); lower 5-6 pectoral fin rays free and longer than upper ones (Ref. 38374); precaudal vertebrae 13-16 (Ref. 34024).

Ease of Identification likely to be confused with closely related species.

Meristic characteristics of Dicrolene nigra

Lateral Lines 1 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 20 - 29
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes extending over most of the back length
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total
Soft-rays total 94 - 117
Adipose fin absent

Caudal fin

Attributes pointed; confluent

Anal fin(s)

Fins number 1
Spines total
Soft-rays total 88 - 102

Paired fins

Pectoral Attributes  several lower rays isolated
Spines     
Soft-rays   20 - 28
Pelvics Attributes  reduced to filaments
Position    jugular  before origin of D1
Spines     
Soft-rays   2 - 2
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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