Morphology Data of Melanotaenia ericrobertsi
Identification keys
Main Ref. Allen, G.R., P.J. Unmack and R.K. Hadiaty, 2014
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors

Descriptive characteristics of juvenile and adult

Striking features none
Body shape lateral fusiform / normal
Cross section compressed
Dorsal head profile more or less straight
Type of eyes more or less normal
Type of mouth/snout tube-like
Position of mouth terminal
Type of scales

Diagnosis: a species of melanotaeniid rainbowfish distinguished by the following combination of characters: dorsal rays IV to VI + I, 13-16 ( usually V + 1,14 or 15); anal rays 1,23-27 (usually 25 or 26); pectoral rays 13-15 ( usually 14 or 15); lateral scales 37-39 (usually 38); transverse scales 9 or 10;

predorsal scales 17-19; circumpeduncular scales 12 or 13; total gill rakers on first arch 15-19 (usually 17 or 18); total scales covering preoperculum 12-

16 (mean 14.1); origins of first dorsal and anal fins about level; greatest body depth of adult male about 2.7-3.1 in SL; colour of adult male in life

generally mauve to pale yellowish with orange stripe between each scale row on side of body; blackish zone on lower 2/3 of caudal peduncle and adjacent body above last few anal rays; blackish patch immediately behind pectoral-fin base; pelvic and median fins reddish with narrow white margin on dorsal fins (Ref. 119199).

Ease of Identification

Meristic characteristics of Melanotaenia ericrobertsi

Lateral Lines Interrupted: No
Scales on lateral line 37 - 39
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)

Attributes extending over most of the back length
Fins number 2
Finlets No. Dorsal   
Spines total 5 - 7
Soft-rays total 13 - 16
Adipose fin absent

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number
Spines total 1
Soft-rays total 23 - 27

Paired fins

Pectoral Attributes  more or less normal
Soft-rays   13 - 15
Pelvics Attributes  more or less normal
Position    thoracic  before origin of D1
Spines     1
Soft-rays   5
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Hennyey, Andrea
Modified by Hennyey, Andrea
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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