Morphology Data of Alionematichthys piger
Identification keys
Abnormalities
Main Ref. Møller, P.R. and W. Schwarzhans, 2008
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 compressed
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

This species is distinguished by the following characters: D 72-88; A 55-70; moderately large eyes (1.7-2.8%SL); slender body; blunt snout, many cirri; cheeks with scales and rarely 1-2 scales above opercular spine; with upper preopercular pore; outer pseudoclasper broad-based, large, often extending beyond hood when in resting position, while the inner one is small, with equal anterior and posterior lobes; otolith length to height 1.9-2.1, with gently curved dorsal rim; otolith length to sulcus length 1.5-1.6, ostium length to caudal length 3.5-4.5; vertebrae 11-12 + 29-33 = 40-45 (Ref. 81230).

Description: Characterized by uniform dark brown to blackish color; body depth at origin of anal fin 14.8-19.5 (mean 17.8) % SL; caudal rays 14-18; anterior nostril high on snout, about one-third or less distance from lip to anterior rim of eye (Ref. 90102).

Ease of Identification

Meristic characteristics of Alionematichthys piger

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 13 - 19
Vertebrae
preanal 11 - 12
total 40 - 45

Fins

Dorsal fin(s)

Attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total
Soft-rays total 72 - 88
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number 1
Spines total
Soft-rays total 55 - 70

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   19 - 22
Pelvics Attributes  
Position    
Spines     
Soft-rays   
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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