Morphology Data of Symphorus nematophorus
Identification keys
Main Ref. Allen, G.R., 1985
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs no special organs
Different appearance males alike females
Different colors males alike females

Descriptive characteristics of juvenile and adult

Striking features none
Body shape lateral fusiform / normal
Cross section oval
Dorsal head profile clearly convex
Type of eyes more or less normal
Type of mouth/snout more or less normal
Position of mouth terminal

Description: Head profile steep. Preorbital bone broader than eye. A deep groove between the eye and nostrils. Preopercular notch and knob absent. Mouth large extending to below middle of eye. Anterior dorsal soft rays produced into filaments in young. Pectoral fins long reaching level of anus. Scale rows on back parallel to lateral line. Juveniles whitish along lower half of the body from below eye level. Young with bright blue stripes on yellowish sides; brown back. Adults yellowish brown to reddish. Sometimes show faint vertical barring. Numerous blue lines along scale-rows that are brightest in sub-adults (Ref. 48635). Distinguished by steep snout profile and elevated dorsal and anal fins, and filaments on soft dorsal fin. Body depth 2.6-2.8 in SL (Ref. 90102).

Ease of Identification

Meristic characteristics of Symphorus nematophorus

Lateral Lines 1 Interrupted: No
Scales on lateral line 49 - 55
Pored lateral line scales
Scales in lateral series
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 13 - 13
on upper limb 5 - 5
total 18 - 18


Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 10 - 10
Soft-rays total 15 - 16
Adipose fin absent

Caudal fin

Attributes more or less truncate; more or less normal

Anal fin(s)

Fins number 1
Spines total 3 - 3
Soft-rays total 9 - 9

Paired fins

Pectoral Attributes  more or less normal
Soft-rays   16 - 17
Pelvics Attributes  more or less normal
Position    thoracic  behind origin of D1
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Luna, Susan M.
Modified by Olisa, Kristine Elaine Paz
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cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17