Morphology Data of Sicyopterus squamosissimus
Identification keys
Main Ref. Keith, P., C. Lord, F. Busson, S. Sauri, N. Hubert and R. Hadiaty, 2015
Appearance refers to Male; Female
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks Males have an elongate urogenital papilla in appearance with distal tip rounded (vs. bulbous bilobed urogenital papilla in females).

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral fusiform / normal
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales cycloid scales

Sicyopterus squamosissimus is distinguished by having two lateral clefts on crenulated upper lip, a second dorsal fin with one spine and 10 segmented rays, filamentous second and third rays of the first dorsal fin, 61-66 lateral scales, 21-26 predorsal scales and 17-22 transverse back scales, and a reddish caudal fin in male with a slight blue line on the upper and lower parts (Ref. 106177).

Ease of Identification

Meristic characteristics of Sicyopterus squamosissimus

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales
Scales in lateral series 61 - 66
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)

Fins number 2
Finlets No. Dorsal   
Spines total 7 - 7
Soft-rays total 10 - 10
Adipose fin present

Caudal fin


Anal fin(s)

Fins number
Spines total 1 - 1
Soft-rays total 10 - 10

Paired fins

Pectoral Attributes  
Soft-rays   18 - 20
Pelvics Attributes  
Spines     1
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Torres, Armi G.
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