Morphology Data of Oncopterus darwinii
Identification keys
Abnormalities
Main Ref. Nakamura, I., T. Inada, M. Takeda and H. Hatanaka, 1986
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 short and / or deep
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

Pectoral fin with 12 soft rays on ocular side, 11 on blind side. Strong spine anterior to anal fin, prominent in young specimens. Lateral line with a distinct curve above pectoral fin and with several transverse accessory branches. Pale brownish, covered with many small white spots; some larger white spots at upper and lower edges of body (Ref. 27363).

Ease of Identification

Meristic characteristics of Oncopterus darwinii

Lateral Lines 1 Interrupted: No
Scales on lateral line 111 - 122
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 15 - 21
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes
Fins number 1
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 0 - 0
Soft-rays total 59 - 67
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 41 - 46

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   11 - 12
Pelvics Attributes  more or less normal
Position    thoracic  behind origin of D1
Spines     0
Soft-rays   6 - 6
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Comments & Corrections
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