Morphology Data of Trimma flavatrum
Identification keys
Main Ref. Hagiwara, K. and R. Winterbottom, 2007
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 compressed
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales

This species is characterized by the following: presence of scales in the predorsal midline and on the cheek and opercle; no elongate dorsal spines; a broad and somewhat concave interorbital region with a bony interorbital equal to about half or more of the width of the pupil with no raised, longitudinal, fleshy ridge in the midline; no postorbital trench; fifth pelvic fin ray usually unbranched (may be branched once sequentially); preserved specimens with a dusky body with densely scattered melanophores and chromatophores, the shade intensifying posteriorly to almost black in the peduncular region; body of alive or freshly collected specimens have yellow to dirty yellow-orange with scattered melanophores intensifying to a blackish or dark brown caudal peduncle, with median fins reddish-orange to yellow with a dark basal stripe, except for the caudal fin, which varies from almost translucent to yellow with whitish margins (Ref. 58123); characterized further by having longitudinal scale series 22-26; predorsal scales 7-8; depth of body about 4.4-4.6 in SL (Ref. 90102).

Ease of Identification

Meristic characteristics of Trimma flavatrum

Lateral Lines Interrupted: No
Scales on lateral line 22 - 26
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 11 - 13
on upper limb 3 - 4
total 15 - 17


Dorsal fin(s)

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

Caudal fin


Anal fin(s)

Fins number 1
Spines total 1 - 1
Soft-rays total 7 - 8

Paired fins

Pectoral Attributes  
Spines     0
Soft-rays   13 - 15
Pelvics Attributes  
Spines     1
Soft-rays   5 - 5
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Capuli, Estelita Emily
Modified by Valdestamon, Roxanne Rei
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