Morphology Data of Trimma marinae
Identification keys
Main Ref. Winterbottom, R., 2005
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 more or less straight
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales

Diagnosis: Predorsal scales and a bony interorbital about pupil diameter in width. Second dorsal spine elongated. Fifth pelvic fin ray branched dichotomously once and 55-80% of the fourth. Scales on cheek absent; one or two cycloid scales on the upper opercle; usually two rows of scales anterior to the pelvic fin base. Snout and lower half of the caudal peduncle with a slight sprinkling of melanophores. A broad, rounded, median ridge present on the snout and anterior interorbital region. Unique to the genus, a large, bilateral, open nasal pit, instead of the usual nasal sac with anterior and posterior openings (Ref. 55345); characterized further by semi-translucent pinkish, abdomen and most of head reddish pink, merging with tapered pink stripe to middle caudal fin base; midline of snout with blue-white spot; internal white stripe above vertebral column; longitudinal scale series 23-25; predorsal scales 6-8 (Ref. 90102).

Ease of Identification

Meristic characteristics of Trimma marinae

Lateral Lines Interrupted: No
Scales on lateral line 23 - 25
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 12 - 12
on upper limb 2 - 3
total 14 - 15


Dorsal fin(s)

Attributes other
Fins number 1
Finlets No. Dorsal   
Spines total 7 - 7
Soft-rays total 8 - 8
Adipose fin absent

Caudal fin

Attributes more or less truncate

Anal fin(s)

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

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   14 - 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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