Morphology Data of Astyanax cubilhuitz
Identification keys
Main Ref. Schmitter-Soto, J.J., 2017
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
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales

Astyanax cubilhuitz is distinguised from other congeners in north-eastern Guatemala and Belize by having body depth 35% SL or less (35% or more in A. bacalarensis and A. belizianus), eye larger, diameter 35% HL (vs. 32% or less), mean predorsal length, 52% SL (49% in A. macal and A. petenensis), mean anal-base length, 26% SL (vs. 28% or more), longest anal-fin ray, mean 17% SL (vs. 14%), upper pharyngeal plate oval in shape (crescent-shaped, in A. belizianus); and humeral spot rectangular in shape (vs. indistinct or P-shaped) (Ref. 118583).

Ease of Identification

Meristic characteristics of Astyanax cubilhuitz

Lateral Lines Interrupted: No
Scales on lateral line 34 - 38
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line 6.5 - 8
Scale rows below lateral line
Scales around caudal peduncle 13 - 16
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 12 - 14
on upper limb
total 32 - 33


Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   
Spines total
Soft-rays total 9 - 9
Adipose fin

Caudal fin

Attributes forked

Anal fin(s)

Fins number
Spines total
Soft-rays total 21 - 26

Paired fins

Pectoral Attributes  more or less normal
Soft-rays   12 - 12
Pelvics Attributes  more or less normal
Position    abdominal  before origin of D1
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Torres, Armi G.
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