Morphology Data of Archolaemus orientalis
Identification keys
Main Ref. Vari, R.P., C.D. de Santana and W.B. Wosiacki, 2012
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 sub-terminal/inferior
Type of scales

Distinguished from all species of the Archolaemus by the absence of a narrow dark stripe along the lateral line and absence of a broad band of dusky to dark pigmentation overlying the basal pterygiophores of the anal fin (versus the presence of such dark pigmentation). Differs further from other congeners by having the following combination of characters: gape short, the rictus falling short of the vertical through the posterior border of the posterior nares; 16 pectoral-fin rays; 164-186 anal-fin rays; anteroposterior length of premaxilla equal to the transverse width; length of the posterior ceratohyal approximately the same length as the ventral hypohyal; length of the coronomeckelian bone less than 20% the length of Meckel’s cartilage; teeth on the dentary restricted to the anterior one-half or slightly more of the dorsal margin of the dentary (Ref. 93148).

Ease of Identification

Meristic characteristics of Archolaemus orientalis

Lateral Lines Interrupted: No
Scales on lateral line 120 - 143
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line 15 - 15
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
Finlets No. Dorsal   
Spines total
Soft-rays total
Adipose fin absent

Caudal fin


Anal fin(s)

Fins number
Spines total
Soft-rays total 164 - 186

Paired fins

Pectoral Attributes  
Soft-rays   18 - 18
Pelvics Attributes  
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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