Morphology Summary - Scobinancistrus raonii
Morphology Data of Scobinancistrus raonii
Identification keys
Abnormalities
Main Ref. Chaves, M.S., R.R. de Oliveira, A.P. Gonçalves, L.M. Sousa and L.H.R. Py-Daniel, 2023
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  (shape guide) elongated
Cross section oval
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

This species is distinguished from its congeners by the following set of characters: caudal peduncle 11.7-13.5% in SL; large yellow irregularly shaped and widely spaced spots over entire body, spots larger than pupil diameter; last dorsal-fin ray not reaching adipose-fin plate when adpressed in specimens larger than 80 mm SL; lack of contact between hyomandibular and quadrate posteroventrally; lack of yellow large distal band on the dorsal and caudal fins (Ref. 137688).

Ease of Identification

Meristic characteristics of Scobinancistrus raonii

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 31 - 32

Fins

Dorsal fin(s)

Attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total 2 - 2
Soft-rays total 7 - 7
Adipose fin present

Caudal fin  (shape guide)

Attributes

Anal fin(s)

Fins number 1
Spines total
Soft-rays total 4 - 4

Paired fins

Pectoral Attributes  
Spines     1
Soft-rays   6 - 6
Pelvics Attributes  
Position    
Spines     
Soft-rays   5 - 5
(e.g. 9948)
(e.g. oophagy)
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