Morphology Data of Nielsenichthys pullus
Identification keys
Abnormalities
Main Ref. Schwarzhans, W. and P.R. Møller, 2011
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

This species is distinguished by the following set of characters: anterior nostril placed high on snout (nearly half the distance from upper lip to anterior margin of eye); male copulatory organ with 2 pairs of equally large pseudoclaspers connected by thin ligament; pseudoclaspers slender, each with single straight supporter, inner pseudoclasper positioned anterior of outer pseudoclasper; precaudal vertebrae 12; rays on dorsal fin 84-90 and anal fin 59-67; head with scale patch on cheek only, no scales on operculum; upper preopercular pore present; maxilla expanded postventrally; otolith elongate (length to height 2.2-2.3), colliculi separated, ostium approaching close to anterior rim of otolith, ostium length to caudal length 3.3-3.8; size small, up to about 40 mm SL (Ref. 88966).

Ease of Identification

Meristic characteristics of Nielsenichthys pullus

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
total 42 - 43

Fins

Dorsal fin(s)

Attributes
Fins number
Finlets No. Dorsal   
Ventral  
Spines total
Soft-rays total 84 - 90
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number
Spines total
Soft-rays total 59 - 67

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   21 - 22
Pelvics Attributes  
Position    
Spines     
Soft-rays   
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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