Morphology Data of Rhinogobius similis
Identification keys
Main Ref. Suzuki, T., K. Shibukawa, H. Senou and I.-S. Chen, 2015
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks Male genital papilla triangular, in female rounded; posterior rays of anal and second dorsal fins are longer in male (may reach to caudal fin, particularly in large adult), shorter and never reaching caudal fin in young and female; when alive or freshly collected, adult male with broad submarginal yellowish bands on dorsal fins (none in female and young) (Ref. 104791).

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral elongated
Cross section compressed
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth terminal
Type of scales cycloid and ctenoid scales

This species is distinguished from its congeners by the following combination of characters: D1 I,8; pectoral-fin rays 18-19; predorsal scales 8-12; longitudinal scales 29-31; vertebrae 11+15 = 26; predorsal squamation composed of large ctenoid scales, reaching anteriorly to near posterior

margin of the eye; short transverse rows of sensory papillae 5-6 below eye; several short transverse

rows of sensory papillae (a part of row c) between 2 longitudinal rows of sensory papillae on cheek; head with a dark brownish gray reticulation or reddish oblique lines except for its ventral surface; upper end of pectoral-fin base with a black spot, as large as pupil; midlateral body with a longitudinal series of alternating large and small black blotches; 2-4 irregular longitudinal rows of small skyblue spots on midlateral body when alive (Ref. 104791).

Ease of Identification

Meristic characteristics of Rhinogobius similis

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 7 - 7
on upper limb 1 - 1
total 8 - 8
preanal 11 - 11
total 26 - 26


Dorsal fin(s)

Fins number 2
Finlets No. Dorsal   
Spines total 7 - 7
Soft-rays total 8 - 8
Adipose fin

Caudal fin


Anal fin(s)

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

Paired fins

Pectoral Attributes  
Soft-rays   18 - 19
Pelvics Attributes  
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Capuli, Estelita Emily
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