Morphology Data of Melanotaenia arguni
Identification keys
Main Ref. Kadarusman, R.K. Hadiaty, G. Segura, G. Setiawibawa, D. Caruso and L. Pouyaud, 2012
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks Males lack the pronounced body depth and the elongation of the posterior dorsal and anal fin rays (vs. deeper body and more elongate and pointed shape posteriorly on the soft dorsal and anal fins in females).

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 terminal
Type of scales cycloid scales

Differs from other species of the genus Melanotaenia in the Bomberai Peninsula and Bird’s Neck region by the combination of the following characters: dorsal rays IV to V-I,12 to 16; anal rays I,20-24; lateral scales 34-37; transverse scales 10-11; predorsal scales 16-18; cheek scales 14-20; gillrakers 17-18; a short snout length, 8.3-9.1% of SL; a thin interorbital width, 8.3-9.0% of SL; a small eye diameter, 6.6-7.2% of SL; a thin body width, 11.0-13.0% of SL; a short and thin caudal peduncle (its length, 14.1-16.1 and depth, 10.0-10.8% of SL); a moderately long predorsal length, 36.8-39.7% of SL; a long preanal length, 49.7-52.9% of SL (Ref. 91054).

Ease of Identification

Meristic characteristics of Melanotaenia arguni

Lateral Lines Interrupted: No
Scales on lateral line 34 - 37
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
total 17 - 18


Dorsal fin(s)

Fins number 1
Finlets No. Dorsal   
Spines total 4 - 5
Soft-rays total 12 - 16
Adipose fin absent

Caudal fin

Attributes forked

Anal fin(s)

Fins number
Spines total 1 - 1
Soft-rays total 20 - 24

Paired fins

Pectoral Attributes  more or less normal
Soft-rays   12 - 15
Pelvics Attributes  more or less normal
Position    abdominal  before origin of D1
Spines     1
Soft-rays   5 - 5
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Torres, Armi G.
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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