Morphology Data of Nautichthys oculofasciatus
Identification keys
Abnormalities
Main Ref. Hart, J.L., 1973
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

Caudal fin rounded, directed upward (Ref. 6885). Color variable, gray above with dark markings and obscure dusky bands, paler below; spinous dorsal darker; other fins except pelvic fins diagonally streaked darker; sometimes red flecks on rayed dorsal and on eyes; a very distinct black band running diagonally down and back through eye (Ref. 6885). A recognizable variant occurs in Knight Inlet, British Columbia - the first caudal fin is dominated by the II, III, I rather than the first four spines and the whole fin is frail and when removed from fluid appears more like a mast than a sail (Ref. 6885).

Ease of Identification

Meristic characteristics of Nautichthys oculofasciatus

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 first fin ray very elongated
Fins number 2notched No
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 8 - 9
Soft-rays total 27 - 30
Adipose fin absent

Caudal fin

Attributes other (see remark); more or less normal

Anal fin(s)

Fins number 1
Spines total 0 - 0
Soft-rays total 18 - 20

Paired fins

Pectoral Attributes  very large , lobe-like
Spines     0
Soft-rays   13 - 14
Pelvics Attributes  more or less normal
Position    thoracic  behind origin of D1
Spines     1
Soft-rays   3 - 3
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