Morphology Data of Trimma papayum
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 unique in having the following set of characters: one-third pupil diameter black ocellated spot on and just behind the fourth dorsal fin spine; fins rays in dorsal 9, anal 8, pectoral 18-19, with the middle ones branched; a single branch point in the fifth pelvic fin ray, about 60-70% the length of the fourth and a basal membrane about 10-20% the length of the fourth ray;10-11 anterior and 8-9 posterior transverse scale rows; 5-10 scales in the predorsal midline, no scales on cheek and a single row of 3 scales on the upper margin of the opercle; a shallow interorbital trench with no trench posterodorsal to the orbit; freshly collected specimens are orange red in overall colouration, with scattered diffuse yellow spots (Ref. 87358).

Ease of Identification

Meristic characteristics of Trimma papayum

Lateral Lines Interrupted: No
Scales on lateral line 23 - 23
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle 12 - 12
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 9 - 9
Adipose fin

Caudal fin


Anal fin(s)

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

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.
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cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17