Morphology Data of Microphis aculeatus
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

Diagnosis: extremely elongate; tubular snout; tail shorter than head and trunk; body encased by bony plates or rings; 19-21 bony rings before, 22-24 behind, anus; anal and caudal fins present; dorsal fin beginning on trunk, extending mainly over tail; brood pouch of males on underside of trunk (Ref. 57226).

Description: head length comprised from 4.8-5.6 times in SL (Ref. 57226).

Coloration: preserved specimens dark brown, but often very variable, with black spots or bars on head and body (Ref. 57226).

Ease of Identification

Meristic characteristics of Microphis aculeatus

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
total
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total 0 - 0
Soft-rays total 41 - 51
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   18 - 21
Pelvics Attributes  suppressed/absent
Position    absent
Spines     
Soft-rays   
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