Morphology Data of Microsternarchus brevis
Identification keys
Main Ref. Cox Fernandes, C., A. Nogueira, A. Williston and J.A. Alves-Gomes, 2015
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral eel-like
Cross section compressed
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth

This species is distinguished by the following characters: short caudal filament 12.8-20.9% of TL; size of body small 3.75-5.32 cm SL; slightly inferior mouth 1.34-2.42 cm HL; pigmentation on body uniformly distributed along the entire area, including head; it also lacks a well delineated dark area on the pseudotympanum, where the anterior end of the posterior lateral line nerve branches with the dorsal ramus of the posterior lateral line nerve (Ref. 104297).

Description: The electric organ occupies about 10% of greatest body depth and 1% from the snout to posterior end of anal fin; it is deep in the first 2/3 of he body, located above the proximal radials and is more visible over the last 1/3 of body above the end of the anal fin. The electrolytes appear to be large, consist of 1-2 bilateral pairs of columns rows parallel to the axis of the body. Accessory electric organ absent on head or humeral region (Ref. 104297).

Ease of Identification

Meristic characteristics of Microsternarchus brevis

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


Dorsal fin(s)

Fins number
Finlets No. Dorsal   
Spines total
Soft-rays total
Adipose fin

Caudal fin


Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  
Pelvics Attributes  
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Capuli, Estelita Emily
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