Morphology Data of Naso thynnoides
Identification keys
Abnormalities
Main Ref. Masuda, H., K. Amaoka, C. Araga, T. Uyeno and T. Yoshino, 1984
Appearance refers to
Bones in OsteoBase Skull, Spine

Sex attributes

Specialized organs no special organs
Different appearance males alike females
Different colors males alike females
Remarks

Descriptive characteristics of juvenile and adult

Striking features none
Body shape lateral fusiform / normal
Cross section compressed
Dorsal head profile clearly convex
Type of eyes more or less normal
Type of mouth/snout tube-like
Position of mouth terminal
Type of scales
Diagnosis

Body elongate-ovate. Dorsal and anal profiles nearly even. Forehead without rostral prominence when in adults. Peduncular plate single, with a semicircular, retrorsely curved keel. Reaches 35 cm SL.

Description: Characterized further by overall pale grey body color; side of body with broad yellowish zone and numerous thin bluish-grey bars; greatest depth of body 2.8-3.2 in SL (Ref. 90102).

Ease of Identification

Meristic characteristics of Naso thynnoides

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Barbels 0
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes extending over most of the back length
Fins number 1
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 4 - 4
Soft-rays total 28 - 30
Adipose fin absent

Caudal fin

Attributes more or less truncate

Anal fin(s)

Fins number 1
Spines total 2 - 2
Soft-rays total 27 - 29

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   17 - 18
Pelvics Attributes  more or less normal
Position    abdominal  behind origin of D1
Spines     1
Soft-rays   3 - 3
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