Morphology Data of Apterygocampus epinnulatus
Identification keys
Abnormalities
Main Ref. Kuiter, R.H. and T. Tonozuka, 2001
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs other
Different appearance always different morphology between mature adults
Different colors
Remarks Males with brood pouch; females with ovipositor (Ref. 205).

Descriptive characteristics of juvenile and adult

Striking features striking shape of body
Body shape lateral eel-like
Cross section circular
Dorsal head profile
Type of eyes
Type of mouth/snout tube-like
Position of mouth terminal
Type of scales
Diagnosis

Holotype from 'reef', a brooding male lacks dorsal and pectoral fins, while those fins present in its pouch-larvae. Planktonic specimens at similar size of adults have dorsal fin and pectoral fins. The female looks much like female Acentronura, but have a moderately large caudal fin. The pouch of the male holotype is sac-like, also similar to Acentronura (Ref. 48635).

Description: Characterized by generally whitish color; pair of dark bands below eye; pectoral fin membranous, in pouch larvae and planktonic specimens, absent in adult; absence of anal fin; 10 caudal rays; rings 11 + 35 - 38; continuous superior trunk and tail ridges; end of inferior trunk ridge near anal ring; lateral trunk ridge confluent with inferior tail ridge; closed male brood pouch, sac-like, opening through anteromesial pore (Ref. 90102).

Ease of Identification

Meristic characteristics of Apterygocampus epinnulatus

Lateral Lines Interrupted: No
Scales on lateral line
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
Finlets No. Dorsal   
Ventral  
Spines total
Soft-rays total 17 - 20
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   
Pelvics Attributes  suppressed/absent
Position    absent
Spines     
Soft-rays   
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