Morphology Data of Andriashevicottus megacephalus
Identification keys
Abnormalities
Main Ref. Fedorov, V.V., 1990
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 clearly convex
Type of eyes
Type of mouth/snout
Position of mouth terminal
Type of scales
Diagnosis

Head large; subopercle spines 4, upper one is largest, bent upward, forked; no spines and crests on occiput; scales on the head in dorsal view stretch forward along the interorbital space to the anterior margin of the eye; in lateral view, scales drop to the level of the lower posterior margin of the eye, the suborbital support and upper preopercular spine; body scales below the base of dorsal spine in the form of a band with irregular diagonal rows, in a row along the lateral line and in a spot under the pectoral fin behind the upper margin of its base. 2 nostrils; branchiostegal membranes united and free of isthmus; well developed pseudobranch; a small opening behind the 4th gill arch (Ref. 41742).

Ease of Identification

Meristic characteristics of Andriashevicottus megacephalus

Lateral Lines Interrupted: No
Scales on lateral line 43 - 43
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 18 - 18
Vertebrae
preanal
total 40 - 40

Fins

Dorsal fin(s)

Attributes
Fins number
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 9 - 9
Soft-rays total 20 - 20
Adipose fin absent

Caudal fin

Attributes more or less truncate; more or less normal

Anal fin(s)

Fins number
Spines total
Soft-rays total 13 - 13

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   18 - 18
Pelvics Attributes  
Position    
Spines     1
Soft-rays   3 - 3
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