Morphology Data of Sicyopterus lagocephalus
Identification keys
Abnormalities
Main Ref. Keith, P., E. Vigneux and P. Bosc, 1999
Appearance refers to Male; Female
Bones in OsteoBase

Sex attributes

Specialized organs protruding genital papilla (m)
Different appearance always different morphology between mature adults
Different colors males alike females
Remarks Males have prolonged second, third, and fourth spines of the first dorsal fin. The membrane almost extends to the tip of these prolonged spines. Males have more slender and longer body than females (Ref. 110258). During breeding, the genital papilla is long, slender and bluntly pointed in males while females have short, thick, cylindrical or subglobose genital papilla (Ref. 110258).

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

Usually 11 unsegmented rays in second dorsal fin. Pectoral rays usually 19. Predorsal midline usually with 13-16 cycloid scales, anterior scales smaller than those posteriorly. Scales on flanks same size as those on caudal peduncle. Belly always with fairly large cycloid scales, about the same size as those on the caudal peduncle. Caudal fin with blackish or dusky horseshoe-shaped band close to margin, medial rays blackish or dusky (Ref. 37578).

Ease of Identification

Meristic characteristics of Sicyopterus lagocephalus

Lateral Lines Interrupted: No
Scales on lateral line 51 - 54
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 6 - 7
Soft-rays total 9 - 10
Adipose fin

Caudal fin

Attributes

Anal fin(s)

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

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   17 - 20
Pelvics Attributes  part of sucker-disc
Position    
Spines     1
Soft-rays   5 - 5
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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