Morphology Data of Coelorinchus okamurai
Identification keys
Abnormalities
Main Ref. Nakayama, N. and H. Endo, 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
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 its congeners by the following set of characters: snout is moderately long, sharply pointed in lateral and dorsal views, its length 39–42% of head length; lateral nasal ridge is completely supported by nasal bone; light organ is short, with length less than 1/2 orbit diameter, its anterior margin falling far short of pelvic-fin bases; premaxillary teeth in short, uniformly wide band, with the posterior end of the tooth band not reaching lateral corner of mouth; teeth not greatly enlarged; body scales are covered with short, reclined, narrowly blade-like spinules in widely divergent rows; buttresses of body scale spinules are scarcely developed; occipital scales between parietal ridges armed with divergent rows of long, erect, and needle-like spinules; nasal fossa usually naked (a few small scales rarely present anteroventrally); patches of small scales sparsely distributed on the ventral surface of head; scales on underside of head armed with 1-3 rows of short, erect, needle-like to knife-like spinules; interdorsal space is longer than first dorsal-fin base length; subopercle terminating as a long, slender flap; body dark overall with no prominent markings; fins are uniformly blackish (Ref. 129407).

Ease of Identification

Meristic characteristics of Coelorinchus okamurai

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

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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