Morphology Data of Ariosoma gracile
Identification keys
Abnormalities
Main Ref. Kodeeswaran, P., A. Kathirvelpandian, D. Ray, A. Mohapatra, T.T.A. Kumar, C. Raghunathan and U.K. Sarkar, 2024
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral
Cross section circular
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

This medium-sized slender eel is distinguished from its congeners by the following set of characters: anus positioned well-before middle of total length, pre-anal length 43.7% (41.3-44.7%) of TL; tail longer, 55.3-58.7% TL; dorsal-fin is above pectoral-fin base; no dark or whitish

bands on dorsal surface of the head, ventral extremities and mid-portion of lower jaw with minute dark pigmentation patch; short vomerine teeth patch with three or four rows of pointed teeth in the anterior portion, intermaxillary teeth patch curved, slightly upturned at anterior end, clearly

visible when mouth is closed, separated from vomerine and maxillary teeth by a definite gap; SO canal with 4 pores; on ST canal 0 or 3 pores; pre-dorsal vertebrae 9 (9); pre-anal vertebrae 48 (49-54); total vertebrae 141 (140-142) (Ref. 130865).

Ease of Identification

Meristic characteristics of Ariosoma gracile

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
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total
Vertebrae
preanal 48 - 54
total 140 - 142

Fins

Dorsal fin(s)

Attributes
Fins number
Finlets No. Dorsal   
Ventral  
Spines total
Soft-rays total
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   
Pelvics Attributes  
Position    
Spines     
Soft-rays   
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