Morphology Data of Ocyurus chrysurus
Identification keys
Abnormalities
Main Ref. Allen, G.R., 1985
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs no special organs
Different appearance males alike females
Different colors males alike females
Remarks

Descriptive characteristics of juvenile and adult

Striking features none
Body shape lateral fusiform / normal
Cross section oval
Dorsal head profile more or less straight
Type of eyes more or less normal
Type of mouth/snout more or less normal
Position of mouth terminal
Type of scales
Diagnosis

Head relatively small, lower jaw projecting slightly beyond the upper. Scale rows on back rising obliquely above lateral line. Back and upper sides blue to violet with scattered yellow spots. A prominent mid-lateral yellow band running from the snout to the caudal fin base. The lower sides and belly whitish with narrow reddish and yellow stripes; the dorsal and caudal fins yellow; the anal and pelvic fins whitish.

Ease of Identification

Meristic characteristics of Ocyurus chrysurus

Lateral Lines 1 Interrupted: No
Scales on lateral line 46 - 49
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Barbels 0
Gill clefts (sharks/rays only) absent
Gill rakers
on lower limb 21 - 22
on upper limb
total
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 1notched No
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 10 - 10
Soft-rays total 12 - 14
Adipose fin absent

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number 1
Spines total 3 - 3
Soft-rays total 8 - 9

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   15 - 16
Pelvics Attributes  more or less normal
Position    thoracic  before origin of D1
Spines     
Soft-rays   
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