Morphology Data of Acantopsis dialuzona
Identification keys
Main Ref. Boyd, D.A., P. Nithirojpakdee, G. Deein, C. Vidthayanon, C. Grudpan, W. Tangjitjaroen, J.M. Pfeiffer, Z.S. Randall, T. Srisombat and L.M. Page, 2017
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
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales

Acantopsis dialuzona is distinguished from all congeners by combination of the following characters: usually 3 pairs of labial barbels; well developed ocellus on upper margin of caudal-fin base; 0-1 row of large spots on side of head; absence of large black spots on dorsal or caudal fins; rarely black specks beneath midlateral row of black spots; dorsal fin usually with 10½ branched and pectoral fin with 10 rays; 11-17 dark saddles along dorsal midline; 7-13 black spots along side of body; 42-43 total vertebrae; and body depth 8.9-11.9% SL, body width 6.4-9.1% SL, caudal-peduncle length 12.5-16.2% SL (Ref. 116755).

Ease of Identification

Meristic characteristics of Acantopsis dialuzona

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
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
preanal 28 - 31
total 42 - 44


Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   
Spines total
Soft-rays total 9 - 11
Adipose fin absent

Caudal fin

Attributes forked

Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  more or less normal
Soft-rays   9 - 11
Pelvics Attributes  more or less normal
Position    abdominal  behind origin of D1
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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