Morphology Data of Eustomias mesostenus
Identification keys
Abnormalities
Main Ref. Gibbs, R.H. Jr., T.A. Clarke and J.R. Gomon, 1983
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
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

A single, very long terminal bulb, its length more than twice its greatest width, constricted at its midlength, with a short, very slender terminal projection included in a broad distal extension of the outer covering membrane of the bulb. Bulb and projection combined 3.2% SL. Barbel short, 42.5% SL. Axis of stem unpigmented. External chevron-shaped or roundish striated areas unpigmented, becoming almost contiguous distally. No inclusions in stem. Middorsal paired spots between occiput and dorsal-fin origin 9 (Ref. 11333).

Ease of Identification

Meristic characteristics of Eustomias mesostenus

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
total 67 - 67

Fins

Dorsal fin(s)

Attributes
Fins number
Finlets No. Dorsal   
Ventral  
Spines total
Soft-rays total 24 - 24
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number
Spines total
Soft-rays total 34 - 34

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   3 - 3
Pelvics Attributes  
Position    
Spines     
Soft-rays   7 - 7
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Comments & Corrections
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