Morphology Data of Synodus macrostigmus
Identification keys
Main Ref. Frable, B.W., C.C. Baldwin, B.M. Lutther and L.A. Weigt, 2013
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 oval
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth

This species is distinguished from its congeners by the following set of characters: D 11 or 12 (rarely 11); A 11; total caudal rays 41-42; dorsal segmented caudal rays 9 and ventral segmented caudal rays 10; dorsal procurrent caudal rays 12, ventral 10-11; pelvic fin rays 8; pectoral-fin rays 11 or 12; total vertebrae 47-49, modally 49; predorsal vertebrae 12 or 13; pored lateral-line scales 45-48; median predorsal scales 12 or 13; scale rows on cheek 4-6; large eye, 4.5-6.9% SL (16.7-24.7% head length); anterior nostril flap long, when depressed, tapering distally and extending over posterior nostril, length of flap 2.7-4.9% HL; snout blunt in dorsal view; pelvic-fin length 21.6-25.2% SL; colouration - caudal fin with dark pigment on anterior end of fork and posterior part of ventral caudal lobe, dorsal caudal lobe pale with light pigment on posterior margin, the shoulder with large, ovoid, black scapular blotch, length 14.2-19.0% HL, there are 6-9 dark bars on trunk, when alive the adults are gray to olive with unevenly distributed orange-yellow stripes along body (Ref. 93218).

Ease of Identification

Meristic characteristics of Synodus macrostigmus

Lateral Lines Interrupted: No
Scales on lateral line 45 - 48
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 47 - 49


Dorsal fin(s)

Fins number
Finlets No. Dorsal   
Spines total
Soft-rays total 11 - 12
Adipose fin

Caudal fin


Anal fin(s)

Fins number
Spines total
Soft-rays total 11 - 11

Paired fins

Pectoral Attributes  
Soft-rays   11 - 12
Pelvics Attributes  
Soft-rays   8 - 8
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Capuli, Estelita Emily
Comments & Corrections
Sign our Guest Book
Back to Search
cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17