Morphology Data of Symphurus insularis
Identification keys
Main Ref. Munroe, T.A., A. Brito and C. Hernandez, 2000
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs no special organs
Different appearance
Different colors
Remarks females apparently larger than males.

Descriptive characteristics of juvenile and adult

Striking features none
Body shape lateral short and / or deep
Cross section flattened
Dorsal head profile clearly convex
Type of eyes more or less normal
Type of mouth/snout other (see Diagnosis)
Position of mouth terminal

a 1-3-2 interdigitation pattern; 12 caudal fin rays; 80-87 dorsal fin rays; 66-72 anal fin rays; 45-48 total vertebrae; 84-98 scales in a longitudinal series; unpigmented peritoneum; unique ocular side pigmentation featuring a yellowish to dark brown background with numerous small, dark speckles, a series of 3-8 mostly incomplete crossbands beginning just posterior to the opercle, and usually 1-3 small, dark, spherical spots arranged in a longitudinal row along the body midline; a series of dark blotches alternating with unpigmented areas on the dorsal and anal fins, and a spot and dark band on the caudal fin base with the distal four-fifths of the caudal fin unpigmented.

Ease of Identification likely to be confused with closely related species.

Meristic characteristics of Symphurus insularis

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales
Scales in lateral series 84 - 98
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Barbels 0
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total 45 - 48


Dorsal fin(s)

Attributes origin on head, nearly above eye
Fins number 1
Finlets No. Dorsal   
Spines total 0 - 0
Soft-rays total 80 - 87
Adipose fin absent

Caudal fin

Attributes pointed; confluent

Anal fin(s)

Fins number 1
Spines total 0 - 0
Soft-rays total 66 - 72

Paired fins

Pectoral Attributes  absent
Pelvics Attributes  asymmetric in size/position
Position    jugular  behind origin of D1
Spines     0
Soft-rays   4 - 4
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by BĂ©arez, Philippe
Modified by Froese, Rainer
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