Morphology Summary - Echidna sagamiensis
Morphology Data of Echidna sagamiensis
Identification keys
Abnormalities
Main Ref. Fujita, A., N. Oomori, H. Senou and H. Wada, 2026
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  (shape guide) eel-like
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

This species is distinguished from its congeners by the following set of characters: small-sized moray eel (232.2-385.0 mm TL); anus situated slightly anterior to mid-body (preanus length 43.1-49.3% of TL); snout short, blunt (snout length 15.3-20.9% of HL); single branchial pore (rarely two or three) located below and posterior to dorsal fin origin; both jaws with many conical, and few molar-like conical teeth, without long canines; peripheral series of intermaxillary teeth uniserial, sometimes intermediate intermaxillary teeth were present; median series of intermaxillary teeth uniserial or absent; vomerine teeth uniserial or biserial, larger than maxillary teeth; maxillary teeth without serrations; body pale brown, entirely covered with numerous yellowish-white to yellowish-brown spots, except on snout; eye with fine dark margin; posterior dorsal and anal fins slightly yellowish-green; predorsal vertebrae 3-6 (mode 4), preanal vertebrae 52-54 (53), total vertebrae 128-134 (131) (Ref. 138933).

Ease of Identification

Meristic characteristics of Echidna sagamiensis

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 52 - 54
total 128 - 134

Fins

Dorsal fin(s)

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

Caudal fin  (shape guide)

Attributes

Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   
Pelvics Attributes  
Position    
Spines     
Soft-rays   
(e.g. 9948)
(e.g. oophagy)
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