Morphology Data of Pseudorhombus megalops
Identification keys
Abnormalities
Main Ref. Hensley, D.A. and K. Amaoka, 1989
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks

Descriptive characteristics of juvenile and adult

Striking features flatfish
Body shape lateral short and / or deep
Cross section compressed
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 ctenoid scales
Diagnosis

Color of preserved specimens tan to dark grey on the ocular side; tan or whitish on the blind side. Pectoral fin rays 11-13 on ocular side; 11-12 on blind side. Pelvic fin of ocular side with black spot and shorter than that on the blind side. Gill rakers elongate and pointed. 1st interhemal spine stout.

Ease of Identification

Meristic characteristics of Pseudorhombus megalops

Lateral Lines 1 Interrupted: No
Scales on lateral line 69 - 77
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)
Gill rakers
on lower limb 15 - 18
on upper limb 5 - 9
total 20 - 27
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes extending over most of the back length
Fins number 1
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 0 - 0
Soft-rays total 67 - 70
Adipose fin absent

Caudal fin

Attributes more or less truncate

Anal fin(s)

Fins number 1
Spines total 0 - 0
Soft-rays total 50 - 53

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   11 - 13
Pelvics Attributes  more or less normal
Position    thoracic  behind origin of D1
Spines     0
Soft-rays   6 - 6
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