Morphology Data of Dibranchus tremendus
Identification keys
Main Ref. Bradbury, M.G., 1999
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 short and / or deep
Cross section flattened
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales other (see remark)

Tubercles without the radiating rows of spinules as seen in D. atlanticus (forming a shagreen). Spines of tubercles extremely long and stout , especially along sides of tail. Tubercles cover the surface of disk. Principal tubercles of ventral surface of tail very large and occupying entire ventral surface except for a few small tubercles in the median portion between anus and anal fin base. Cephalic lateral line count: subopercular usually 5 (4-5); preopercular usually 2. Firm skeleton; pliant skin, especially on ventral surface of disk. Fin without tubercles except at the extreme bases of the pectoral and caudal fins. Pectoral and pelvic fins both relatively long and slender in small individuals, shorter and broader with rays very fleshy in large ones (Ref. 40826).

Ease of Identification

Meristic characteristics of Dibranchus tremendus

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 18 - 20


Dorsal fin(s)

Fins number
Finlets No. Dorsal   
Spines total
Soft-rays total 4 - 7
Adipose fin

Caudal fin


Anal fin(s)

Fins number
Spines total
Soft-rays total 4 - 4

Paired fins

Pectoral Attributes  
Soft-rays   12 - 14
Pelvics Attributes  
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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