Morphology Data of Nezumia merretti
Identification keys
Abnormalities
Main Ref. Iwamoto, T. and A. Williams, 1999
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs no special organs
Different appearance
Different colors
Remarks

Descriptive characteristics of juvenile and adult

Striking features long whip-like tail
Body shape lateral elongated
Cross section compressed
Dorsal head profile more or less straight
Type of eyes more or less normal
Type of mouth/snout other (see diagnosis)
Position of mouth sub-terminal/inferior
Type of scales
Diagnosis

pelvic fin rays 9; underside of head almost completely naked, pocketed with prominent pores; body scales covered with moderately long, needlelike spinules in mostly parallel rows, spinules overlap posterior scale margin slightly; 6.5-7.5 scale rows below origin of second dorsal fin; lower jaw teeth in broad, short band; abdomen light bluish, dorsally on trunk dirty straw-colored or tawny; first dorsal fin dusky overall; anterior dermal window of light organ between pelvic fin bases. Snout protruding, angular.

Ease of Identification

Meristic characteristics of Nezumia merretti

Lateral Lines 1 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 1
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total
Vertebrae
preanal
total

Fins

Dorsal fin(s)

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

Caudal fin

Attributes pointed; confluent

Anal fin(s)

Fins number 1
Spines total 0 - 0
Soft-rays total

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   21 - 22
Pelvics Attributes  more or less normal
Position    thoracic  before origin of D1
Spines     0
Soft-rays   9 - 9
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