Morphology Data of Trimma haimassum
Identification keys
Main Ref. Winterbottom, R., 2011
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 fusiform / normal
Cross section circular
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales

This species is characterized by having the following characters: a relatively deep body, numerous irregular scales with about 30 lateral rows and over 15 scales in the anterior transverse series, a fifth pelvic fin ray that branches twice dichotomously, usually a somewhat elongate second dorsal spine, no predorsal, cheek or opercular scales, a moderately wide bony interorbital with a fleshy median ridge between the eyes, and a dermal ridge anterior to the first dorsal spine. There is a red spot or elongate blotch above the opercle in live and fresh material, and the dorsal surface of the snout has a reticulated dark pattern, with dark transverse stripes over the dorsal margin of the orbit (Ref. 87358).

Ease of Identification

Meristic characteristics of Trimma haimassum

Lateral Lines Interrupted: No
Scales on lateral line 29 - 31
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle 16 - 18
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb


Dorsal fin(s)

Fins number 2
Finlets No. Dorsal   
Spines total 7 - 7
Soft-rays total 10 - 10
Adipose fin

Caudal fin


Anal fin(s)

Fins number 1
Spines total 1 - 1
Soft-rays total 8 - 10

Paired fins

Pectoral Attributes  
Soft-rays   18 - 19
Pelvics Attributes  
Spines     1
Soft-rays   5 - 5
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Busson, Frédéric
Modified by Reyes, Rodolfo B.
Comments & Corrections
Sign our Guest Book
Back to Search
cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17