";} } ?> Morphology Summary - Peprilus xanthurus
Morphology Data of Peprilus xanthurus
Identification keys
Main Ref. Marceniuk, A.P., R. Caires and R. Siccha-Ramirez, 2016
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 short and / or deep
Cross section compressed
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales

This species is distinguished from its congeners by the following characters: in fresh specimens, with a conspicuous dark spot over the eyes, from snout to nape (vs. indistinct marking); pre-caudal vertebrae 11-12 (vs. 13 or more, rarely 12 except P. xanthurus); total vertebrae 28-29 (vs. 30 or more in P. medius, P. ovatus, P. simillimus, P. snyderi); body height 58.5?74.1% SL (vs. 33.0?52% SL in P. burti, P. ovatus, P. simillimus, P. snyderi, P. triacanthus); dorsal fin moderately falcate (vs. not falcate in P. triacanthus, or conspicuously falcate in P. paru); anal fin falcate (vs. not falcate in P. simillimus, P. ovatus, P. snyderi, P. burti, P. triacanthus); front half of the body under the dorsal fin without series of pores (vs. 17?25 conspicuous pores in P. triacanthus); differs from sympatric P. crenulatus by having an orbital diameter of 1.6?5.0 in anal-fin height (vs. 5.1-8.0) for individuals smaller than 11.0 cm SL and 3.2-5.2 (vs. 5.5-9.2) for specimens larger than 10.9 cm SL; orbital diameter 3.2-3.8 in pectoral-fin height (vs. 3.9-5.9), in the specimens larger than 10.9 cm SL; and orbital diameter 1.1-1.4, rarely 1.5 in post-orbital length (vs. 1.5-2.3) (Ref. 116249).

Ease of Identification

Meristic characteristics of Peprilus xanthurus

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 13 - 16
on upper limb 2 - 6
total 15 - 22
preanal 11 - 12
total 28 - 31


Dorsal fin(s)

Fins number
Finlets No. Dorsal   
Spines total 3 - 4
Soft-rays total 39 - 47
Adipose fin

Caudal fin


Anal fin(s)

Fins number
Spines total 2 - 3
Soft-rays total 36 - 42

Paired fins

Pectoral Attributes  
Soft-rays   20 - 22
Pelvics Attributes  
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Comments & Corrections
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