Morphology Data of Characidium nupelia
Identification keys
Main Ref. da Gra├ža, W.F., C.S. Pavanelli and P.A. Buckup, 2008
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance different morphology during breeding season only
Different colors different colors during breeding season only
Remarks Breeding males have anal, pelvic and pectoral fins conspicuously dark, mainly on distal part of fin, and caudal fin hyaline while females have dorsal, pectoral, pelvic and anal fins notably lighter than males. Breeding males differ from breeding females by the presence of blunt sexual hook on distal portion of some branched rays of pelvic and pectoral fins, mainly in former (vs. absence of sexual hooks on fins in females).

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 sub-terminal/inferior
Type of scales cycloid scales

Belongs to a group of species, including Characidium xavante, distinguished uniquely by having high number (12-18) of dark, vertical bars on the body, each bar having the width of a scale. Differs from Characidium xavante by a greater number of scales

around the caudal peduncle (12 vs. 10), narrower interorbital region (interorbital distance 20.5-28.6 vs. 30.1-38.0% HL) and deeper caudal peduncle (caudal peduncle depth 46.2-57.8% vs. 35.4-44.9% HL). Additional conspicuous external characters which are not unique but are

useful in the identification of this species include absence of adipose fin, incomplete lateral line, and presence a dark blotch on the caudal peduncle (Ref. 75787).

Description: Dorsal fin iii9; iii,10; Anal fin iii,6; Pectoral fin iii,8, iii9, iii,10; Pelvic i7, i8 (Ref. 75787).

Ease of Identification

Meristic characteristics of Characidium nupelia

Lateral Lines Interrupted: No
Scales on lateral line 29 - 33
Pored lateral line scales 5 - 8
Scales in lateral series
Scale rows above lateral line 3 - 5
Scale rows below lateral line 4 - 5
Scales around caudal peduncle 12 - 12
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total 33 - 33


Dorsal fin(s)

Fins number
Finlets No. Dorsal   
Spines total
Soft-rays total 12 - 13
Adipose fin absent

Caudal fin

Attributes forked

Anal fin(s)

Fins number
Spines total
Soft-rays total 9 - 9

Paired fins

Pectoral Attributes  
Soft-rays   11 - 13
Pelvics Attributes  
Position    abdominal
Soft-rays   8 - 9
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Torres, Armi G.
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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