Morphology Data of Xenisthmus oligoporus
Identification keys
Abnormalities
Main Ref. Gill, A.C., S.V. Bogorodsky and A.O. Mal, 2017
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 elongated
Cross section oval
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

This species is distinguished from it congeners in having a reduced number of cephalic

sensory pores (without A, I, J, K, P and Q pores) and in having 14-15 segmented rays in the second dorsal fin (Ref. 115539).

Ease of Identification

Meristic characteristics of Xenisthmus oligoporus

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 28 - 28
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 9 - 10
on upper limb 3 - 3
total
Vertebrae
preanal 10 - 10
total 26 - 26

Fins

Dorsal fin(s)

Attributes
Fins number 2
Finlets No. Dorsal   
Ventral  
Spines total 7 - 7
Soft-rays total 14 - 15
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number 1
Spines total 1 - 1
Soft-rays total 13 - 14

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   17 - 18
Pelvics Attributes  
Position    
Spines     1
Soft-rays   5 - 5
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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