Morphology Data of Trimma macrophthalmum
Identification keys
Main Ref. Hoese, D.F., 1986
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 oval
Dorsal head profile more or less straight
Type of eyes more or less normal
Type of mouth/snout more or less normal
Position of mouth terminal
Type of scales cycloid and ctenoid scales

Very similar to T. okinawae but lacks predorsal scales (Ref. 37816). Body with ctenoid scales except ventral midline and pectoral base with cycloid scales. Transverse scales 7-8. Mouth slightly oblique upwards. Second spine longest in 1st dorsal; rays of 2nd dorsal nearly equal; anal fin similar to 2nd dorsal; pectoral reaches to vertical of anus; pelvic fins without frenum but connected to basal membrane (Ref. 43541); characterized further by body with greyish matrix with dense red to orange spotting on head and body; median fins with faint yellow spotting; pair of large red spots on base of pectoral fin; longitudinal scale series 26-27; cheek and opercle without scales; depth of body 3.9-4.2 in TL (Ref. 90102).

Ease of Identification

Meristic characteristics of Trimma macrophthalmum

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales
Scales in lateral series 21 - 23
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 12 - 13
on upper limb 3 - 3
total 15 - 16


Dorsal fin(s)

Fins number 2
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 7 - 7
Soft-rays total 9 - 10
Adipose fin absent

Caudal fin


Anal fin(s)

Fins number 1
Spines total 1 - 1
Soft-rays total 8 - 9

Paired fins

Pectoral Attributes  
Spines     0
Soft-rays   17 - 19
Pelvics Attributes  
Spines     1
Soft-rays   5 - 5
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Garilao, Cristina V.
Modified by Valdestamon, Roxanne Rei
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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