Morphology Data of Chaetostoma spondylus
Identification keys
Main Ref. Salcedo, N.J. and H. Ortega, 2015
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 elongated
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales bony plates or armour

Description: Dorsal fin with 8- 9 rays (one specimen with 6 dorsal rays, with apparently regenerating posteriormost dorsal rays), first ray unbranched; anal fin with 1-3 rays, first ray unbranched; pectoral fin with one spine and six branched rays; pelvic fin with one unbranched and five branched rays; Body with irregular dark blotches, ranging from rounded to narrow bands and noticeable on most specimens (Ref. 103265).

Ease of Identification

Meristic characteristics of Chaetostoma spondylus

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
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total 28 - 29


Dorsal fin(s)

Fins number 1
Finlets No. Dorsal   
Spines total
Soft-rays total 8 - 9
Adipose fin present

Caudal fin

Attributes more or less truncate

Anal fin(s)

Fins number
Spines total
Soft-rays total 1 - 3

Paired fins

Pectoral Attributes  
Spines     1
Soft-rays   6 - 6
Pelvics Attributes  
Soft-rays   6 - 6
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Torres, Armi G.
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