Morphology Data of Diancistrus novaeguineae
Identification keys
Main Ref. Schwarzhans, W., P.R. Møller and J.G. Nielsen, 2005
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 elongated
Cross section compressed
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales

The species is characterized by the following: vertebrae 11+32-34=43-45, dorsal fin rays 74-85 (mostly >77), anal fin rays 60-69, D/V 6 (rarely 7); large eyes (2.1-3.4% SL); outer pseudoclasper with broad hook-shaped extension, with rounded tip, slightly bent outwards; inner pseudoclasper short, joined to outer pseudoclasper anteriorly, supporter with anteriorly oriented small hook, and with a wide thin flap at posterior-distal margin; scale patch on cheek with 7-9 scale rows on upper cheek, many scales on operculum above opercular spin (7-16 scales in 2-4 rows), in very large specimens additional scale patch below opercular spine (4-12); head profile is moderately slender; otolith length sulcus length 1.9-2.0, sulcus slightly inclined (Ref. 57884).

Description: Characterized by depth of body at anal fin origin 15.1-20.8 (mean=18.4) % SL (Ref. 90102).

Ease of Identification

Meristic characteristics of Diancistrus novaeguineae

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
total 13 - 17
preanal 11 - 11
total 43 - 45


Dorsal fin(s)

Fins number
Finlets No. Dorsal   
Spines total
Soft-rays total 74 - 85
Adipose fin

Caudal fin


Anal fin(s)

Fins number
Spines total
Soft-rays total 60 - 69

Paired fins

Pectoral Attributes  
Soft-rays   17 - 21
Pelvics Attributes  
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Capuli, Estelita Emily
Modified by Valdestamon, Roxanne Rei
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