Morphology Data of Gobiodon aoyagii
Identification keys
Main Ref. Shibukawa, K., Suzuki, T. and M. Aizawa, 2013
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 oval
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales

This species is distinguished by the following characters: many reddish spots/stripes on a yellow-green or sky-blue body; when alive or freshly-collected, it differs from similar reddish-spotted/lined congeners, G. erythrospilus and G. histrio, by having the following unique coloration: 2 reddish circular spots (rather than linear spots) on pectoral-fin base (vs. reddish markings on pectoral-fin base usually forming vertical bars in G. erythrospilus and G. histrio, except for small specimens of the former with discontinuous bars); reddish spots on ventral surface of head (vs. none); reddish crescent-like bar along bases of pectoral fin rays absent (vs. present); in in alcohol-preserved specimens, all reddish spots are largely or entirely faded, but this species can be readily identified by having its unique squamation, i.e., 3-4 rows of weakly ctenoid and/or cycloid scales on caudal peduncle (vs. no scales or a single row of minute cycloid scales on caudal peduncle in the congeners); with a deep, inflected interopercular-isthmus groove; unsegmented caudal-fin rays, upper with 5-6, lower with 4-6; no distinct dusky spot at dorsoposterior corner of operculum (Ref. 94251).

Ease of Identification

Meristic characteristics of Gobiodon aoyagii

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 10 - 10
total 25 - 27


Dorsal fin(s)

Fins number 2
Finlets No. Dorsal   
Spines total 7 - 7
Soft-rays total 9 - 11
Adipose fin

Caudal fin


Anal fin(s)

Fins number
Spines total 1 - 1
Soft-rays total 8 - 9

Paired fins

Pectoral Attributes  
Soft-rays   19 - 21
Pelvics Attributes  
Spines     1
Soft-rays   5 - 5
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Capuli, Estelita Emily
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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