Morphology Data of Dodekablennos fraseri
Identification keys
Abnormalities
Main Ref. Springer, V.G. and A.E. Spreitzer, 1978
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks

Descriptive characteristics of juvenile and adult

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

With 12 pectoral-fin rays; with no nape and orbital cirri; typically with fewer than 65 teeth in each jaw; with vomerine teeth; 12 dorsal-fin spines and with only 2-6 branched caudal-fin rays; terminal anal-fin ray unbound by membrane to the caudal peduncle. Males possessing a fleshy, blade-like crest on head. Color pattern based on preserved specimens: dusky head, ventrally paler with slightly dusky chevron in smaller specimens or a cross mark on the largest specimen; dusky bar continuing ventrally beginning from midventral margin of orbit across lip, posteriorly alternated by paler area from diffuse dusky bar continuing ventrally from just posterior to eye across corner of mouth to ventral surface of head, contributing to formation of dusky chevron; pale upper lip and male crest with dusky spots; lateral side of body with 7-8 dark dusky bands interspersed with pale areas; anteriormost band dorsally diffused; all bands continuing onto dorsal fin; posterior bands typically dorsally forked in males and both dorsally and ventrally in females; posteriormost band expanded in largest specimen, continuing ventroposteriorly well onto caudal fin and joining dusky stripe along ventral margin of fin; dorsal-fin spines and rays variably dusky; males with distal intensely black spots on each of the first three interradial membranes; female lacking black spots; anal fin dusky and submarginally darker; spine and ray tips without pigmentation (Ref. 69212).

Ease of Identification

Meristic characteristics of Dodekablennos fraseri

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

Fins

Dorsal fin(s)

Attributes extending over most of the back length
Fins number 1notched No
Finlets No. Dorsal   
Ventral  
Spines total 12
Soft-rays total 19 - 20
Adipose fin absent

Caudal fin

Attributes more or less truncate; more or less normal

Anal fin(s)

Fins number 1
Spines total 2
Soft-rays total 21

Paired fins

Pectoral Attributes  more or less normal
Spines     
Soft-rays   12
Pelvics Attributes  more or less normal
Position    jugular
Spines     1
Soft-rays   3
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