Morphology Data of Diancistrus robustus
Identification keys
Abnormalities
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
Remarks

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral elongated
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

The species is characterized by the following: vertebrae 11+32=43, dorsal fin rays 77, anal fin rays 63; very small eyes (1.8% SL); outer pseudoclasper with short, small ear-lobe extension, opening towards anterior; inner pseudoclasper firmly joined to outer pseudoclasper anteriorly, with supporter, forming a robust thorn, almost as long as outer pseudoclasper; narrow scale patch on cheek, no scales on operculum; the head profile is massive (width 16.6% SL) with blunt snout (Ref. 57884).

Ease of Identification

Meristic characteristics of Diancistrus robustus

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
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total
Vertebrae
preanal 11 - 11
total 43 - 43

Fins

Dorsal fin(s)

Attributes
Fins number
Finlets No. Dorsal   
Ventral  
Spines total
Soft-rays total 77 - 77
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number
Spines total
Soft-rays total 63 - 63

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   20 - 20
Pelvics Attributes  
Position    
Spines     
Soft-rays   
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Comments & Corrections
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