Morphology Data of Astyanax pelecus
Identification keys
Main Ref. Bertaco, V.A. and C.A.S. de Lucena, 2006
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral fusiform / normal
Cross section compressed
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth terminal

Distinguished from its congeners by the following combination of characters: body depth 26.7-34.8% SL, short but pointed snout, that is smaller than the orbital diameter, and anal fin with 16-18 branches rays. Differs from other members of the genus in its distinctive color pattern: with only one humeral spot limited to the region above lateral line series, and has a conspicuous midlateral body stripe extending from the upper margin of opercle to the caudal-fin base, a putative autapomorphy of this species (Ref. 57404).

Description: D. ii, 9; A. iii-v, 16-18; P. i, 11-13; V. i, 7 (Ref. 57404).

Ease of Identification

Meristic characteristics of Astyanax pelecus

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line 5 - 5
Scale rows below lateral line 4 - 4
Scales around caudal peduncle 14 - 14
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total 14 - 14
preanal 16 - 16
total 35 - 35


Dorsal fin(s)

Fins number
Finlets No. Dorsal   
Spines total
Soft-rays total
Adipose fin present

Caudal fin

Attributes forked

Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  
Pelvics Attributes  
Position    abdominal  before origin of D1
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Torres, Armi G.
Modified by Reyes, Rodolfo B.
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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