Morphology Data of Eirmotus octozona
Identification keys
Main Ref. Tan, H.H. and M. Kottelat, 2008
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 short and / or deep
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth terminal
Type of scales

Differs from other congeners by the following unique combination of features: presence of 1 bar; presence of distinct black mark just anterior to anus, laterally and ventrally visible when viewed; simple dorsal-fin rays black in color, black pigment patch in some specimens reaching the first branched rays, other rays hyaline or in some specimens with diffused chromatophores on last dorsal-fin ray; last simple dorsal-fin ray with 25-31 serrae; presence of a faint black margrin along uppermost pectoral-fin ray; bar 5 equal to 1-1½ lateral row scales in width; mouth terminal, lower jaw wide, anteriorly rounded (Ref. 78741).

Ease of Identification

Meristic characteristics of Eirmotus octozona

Lateral Lines Interrupted: No
Scales on lateral line 19 - 21
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


Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   
Spines total
Soft-rays total 11 - 12
Adipose fin absent

Caudal fin

Attributes forked

Anal fin(s)

Fins number
Spines total
Soft-rays total 8 - 9

Paired fins

Pectoral Attributes  more or less normal
Pelvics Attributes  more or less normal
Position    abdominal  before origin of D1
Soft-rays   9 - 10
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Torres, Armi G.
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cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17