Morphology Data of Periophthalmus variabilis
Identification keys
Abnormalities
Main Ref. Jaafar, Z., M. Perrig and L.M. Chou, 2009
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 fusiform / normal
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

This species is characterized by the following: first dorsal fin pattern and coloration variable between individuals, typically, first dorsal fin rounded, moderate height, white margin, and one brown or black stripe inframarginally; the first spine of first dorsal fin always longest, rarely elongated; rounded to elliptical red-orange spots present ventral to inframarginal stripe, turning black in preservative; the second dorsal fin with yellow-orange margin and one black band inframarginally, rounded red-orange spots present on membrane between elements at base, turning black in preservative; live color with caudal and pectoral fins red-orange; prominent pelvic frenum, inner rays fused for less than half their length; ventero-posterior branchiostegal membrane dusky; D1 modally X; D2 modally I,12; A I,11; caudal fin modally 14 segmented rays; 48-60 lateral scales; 17-22 predorsal scales (Ref. 83659).

Ease of Identification

Meristic characteristics of Periophthalmus variabilis

Lateral Lines Interrupted: No
Scales on lateral line 48 - 60
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
Fins number 2
Finlets No. Dorsal   
Ventral  
Spines total 9 - 12
Soft-rays total 11 - 12
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number
Spines total 1 - 1
Soft-rays total 10 - 12

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   10 - 13
Pelvics Attributes  
Position    
Spines     
Soft-rays   
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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