Morphology Data of Acanthurus grammoptilus
Identification keys
Abnormalities
Main Ref. Randall, J.E., 1956
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks

Descriptive characteristics of juvenile and adult

Striking features none
Body shape lateral short and / or deep
Cross section compressed
Dorsal head profile clearly convex
Type of eyes more or less normal
Type of mouth/snout more or less normal
Position of mouth terminal
Type of scales ctenoid scales
Diagnosis

This species is characterize by the following head with small pale (rust colour in life) spots; black around peduncular spine groove of adults extending well ahead of front of spine (by a distance almost as long as spine on a 24.5 cm SL specimen); caudal fin with a very narrow white posterior margin (broader in young); body depth of adults (> 20 cm SL) 2.2.-2.5 times in SL (Ref. 9808); anterior gill rakers 16-18; posterior 21-23; when preserved, color of body brown; head spotted with bands in front of eye; tip of pectoral fin paler than the base; upper end of gill opening with a faint dark brown elongate blotch; dark brown color encircling caudal spine; caudal fin base white (Ref. 1920).

Ease of Identification

Meristic characteristics of Acanthurus grammoptilus

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 9 - 9
Soft-rays total 25 - 26
Adipose fin absent

Caudal fin

Attributes more or less truncate; more or less normal

Anal fin(s)

Fins number 1
Spines total 3 - 3
Soft-rays total 23 - 24

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   16 - 17
Pelvics Attributes  more or less normal
Position    thoracic  behind origin of D1
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
Comments & Corrections
Sign our Guest Book
Back to Search
cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17