Morphology Data of Enneacampus ansorgii
Identification keys
Main Ref. Breder, C.M. and D.E. Rosen, 1966
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
Dorsal head profile
Type of eyes more or less normal
Type of mouth/snout tube-like
Position of mouth terminal

Diagnosis: extremely elongate; tubular snout, which is short, ratio head length/snouth length 2.1-2.8; tail longer than head and trunk; ratio SL/head length 8.4-10.8; body encased by bony plates or rings; 12-13 rings before, 31-37 behind, anus; dorsal-fin origin above anal fin, either on last ring of trunk or on first ring of tail; pelvic fins absent; 12-15 pectoral-fin rays; anal fin strongly reduced, with 2 or 3 rays; 9 caudal-fin rays; brood pouch of males on underside of tail (Ref. 57226).

Description: brood pouch extending over 12-17 rings of tail (Ref. 57226).

Coloration: back and lower sides with irregular diffuse bars occurring every 4 or 5 rings; rectangular brown spot on every ring and on ventral surface of body; light brown irregular spots on sides of trunk and tail; caudal fin marked with irregular spots (Ref. 57226).

Ease of Identification

Meristic characteristics of Enneacampus ansorgii

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 0
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb


Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   
Spines total 0 - 0
Soft-rays total 22 - 29
Adipose fin absent

Caudal fin

Attributes more or less truncate; more or less normal

Anal fin(s)

Fins number 1
Spines total 0 - 0
Soft-rays total 2 - 3

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   12 - 15
Pelvics Attributes  suppressed/absent
Position    absent
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Luna, Susan M.
Modified by Geelhand, Dimitri
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cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17