Morphology Data of Microdevario nanus
Identification keys
Main Ref. Kottelat, M. and K.E. Witte, 1999
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 fusiform / normal
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales

In the field, slightly yellow with iridescent blue side and silvery eye and belly; fins translucent with blotch in dorsal fin variably developed; aquarium-kept yellow with iridescent bluish side and silvery-golden eye, belly and opercle. Dorsal fin tip with a black blotch and a fainter one at the tip of the anal fin. Longitudinal scale series 25-26 + 1-2. Predorsal scales 11-13. Branched anal-fin rays 10-11. Dorsal fin rays 3 simple, 7 branched. Pectoral fin slightly falcate, with no axillary lobe. Pelvic fin slightly pointed, 6 rays, 2 axillary scale distinct in largest specimens. Anal fin rays 3 simple, 10-11 branched rays, last one split to the base. Caudal fin with 10 + 9 principal rays, 9 + 8 branched. No lateral line pores. Predorsal scales 11-13 (Ref. 38434).

Ease of Identification

Meristic characteristics of Microdevario nanus

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  
Spines     0
Soft-rays   10 - 12
Pelvics Attributes  
Soft-rays   6 - 6
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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