Morphology Data of Trimma meityae
Identification keys
Main Ref. Winterbottom, R. and M.V. Erdmann, 2018
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 elongated
Cross section compressed
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales

This species is distinguished by the following characters: scales on cheeks and opercle; scales in predorsal midline 8-10; unbranched pectoral fin rays 17-18; unbranched 5th pelvic fin ray 40-47% length of 4th ray; total gill rakers 21-22; broad interorbital (56-79% pupil width) with narrow crease-like postorbital groove, ending at posteriormost papilla in row p; papillae in row p 8, with 2 papillae ventral to papilla row n; nasal apparatus small and situated on anterior one-third of snout with posterior nares forming posterodorsal margin of nasal sac; colour when alive or freshly collected has the dorsal surface of eye light blue; preserved specimens with melanophores on dorsal surface of snout and mostly adjacent to nasal capsules (Ref. 118315).

Differs from Trimma blematium by having 17-18 pectoral fin rays (vs. 16), unbranched 5th pelvic fin ray (vs. branched), with 8 papillae in row 'p' (vs. 7 papillae); and in live specimens, the blue colour over the top of the eyes is less darker in this species than in T. blematium (Ref. 118315).

Ease of Identification

Meristic characteristics of Trimma meityae

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 16 - 18
on upper limb 4 - 5
total 21 - 22


Dorsal fin(s)

Fins number 2
Finlets No. Dorsal   
Spines total 7 - 7
Soft-rays total 8 - 8
Adipose fin

Caudal fin


Anal fin(s)

Fins number 1
Spines total 1 - 1
Soft-rays total 6 - 8

Paired fins

Pectoral Attributes  
Spines     0
Soft-rays   17 - 18
Pelvics Attributes  
Spines     1
Soft-rays   5 - 5
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Capuli, Estelita Emily
Modified by Capuli, Estelita Emily
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