Morphology Data of Melanotaenia aruensis
Identification keys
Main Ref. Allen, G.R., R.K. Hadiaty, P.J. Unmack and M.V. Erdmann, 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 fusiform / normal
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth terminal
Type of scales cycloid scales

Melanotaenia aruensis is distinguished by the following combination of characters: V to VII-I,10-13 dorsal-fin rays; I,20-23 anal-fin rays; 14-15 pectoral-fin rays; 34-36 scales on lateral line, 15-18 predorsal scales; 13-19 cheek scales; 17-18 total gill rakers on first arch; greatest body depth of adult male 35.1 % SL; least depth of caudal peduncle 9.5-11.1 % SL; colour in life grey-brown dorsally on head, nape, and adjacent anterodorsal portion of body; posterior two-thirds of upper half of body bluish grey with narrow bronze margin around each scale and bronze stripe between each horizontal scale row; dorsal and caudal fins semitranslucent grey, second dorsal fin with relatively broad whitish margin (Ref. 110723).

Ease of Identification

Meristic characteristics of Melanotaenia aruensis

Lateral Lines Interrupted: No
Scales on lateral line 34 - 36
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)

Attributes no striking attributes
Fins number 2
Finlets No. Dorsal   
Spines total 5 - 7
Soft-rays total 10 - 13
Adipose fin absent

Caudal fin

Attributes forked

Anal fin(s)

Fins number
Spines total 1 - 1
Soft-rays total 20 - 23

Paired fins

Pectoral Attributes  more or less normal
Soft-rays   14 - 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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