Morphology Summary - Geophagus pirangaensis
Morphology Data of Geophagus pirangaensis
Identification keys
Abnormalities
Main Ref. Assis, C.E.D., J.A. Dergam, A.F. Cunha, V.N. Machado, T. Hrbek, N.M.D.F. Vicente, V.D. Queiroz and E. Henschel, 2026
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) fusiform / normal
Cross section compressed
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: presence of clear, rounded spots in the posterior most dorsal-fin rays of fixed adult specimens; snout 46.22%-52.74% HL; terminal mouth; head 94.08%-101.15% HL; caudal fin with a rounded distal margin; 25 or 26 longitudinal scales in the E0 series; dark and rounded mid-lateral spot of live specimens; 14 or 15 spines on the dorsal fin; small bright spots in the central region of the bluish spots on the caudal fin of living specimens absent; small bluish spots in the opercular region of living specimens; bluish dots on the most anterior soft rays of the anal fin of living specimens absent; denticles on gill rakers of the first branchial arch present; and bluish and longitudinal lines in the basal region of the caudal fin of living specimens absent (Ref.138566).

Ease of Identification

Meristic characteristics of Geophagus pirangaensis

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 14 - 14
total 28 - 28

Fins

Dorsal fin(s)

Attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total 14 - 15
Soft-rays total 10 - 11
Adipose fin absent

Caudal fin  (shape guide)

Attributes

Anal fin(s)

Fins number 1
Spines total 3 - 3
Soft-rays total 7 - 8

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   13 - 14
Pelvics Attributes  
Position    
Spines     1
Soft-rays   5 - 5
(e.g. 9948)
(e.g. oophagy)
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cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17