Morphology Data of Ellochelon vaigiensis
Identification keys
Abnormalities
Main Ref. Allen, G.R. and M.V. Erdmann, 2012
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks

Descriptive characteristics of juvenile and adult

Striking features none
Body shape lateral fusiform / normal
Cross section oval
Dorsal head profile more or less straight
Type of eyes more or less normal
Type of mouth/snout more or less normal
Position of mouth sub-terminal/inferior
Type of scales
Diagnosis

Diagnosis: This species is distinguished by the following characters: robust body; usually with 16 pectoral-fin rays; 25-29 longitudinal scales; 16 circumpeduncular scales; weakly ctenoid scales; adults with longer snout than eye diameter, shorter in juvenile; poorly developed adipose eyelid, forming narrow rim around eye; weak notch on anteroventral edge of preorbital; truncate caudal fin; colour olive-brown dorsally, flanks and belly silvery to whitish; about 6 brownish stripes on flank formed by longitudinal marks on scales; fins yellowish white with dusky margins except caudal fin yellow and pectoral black dorsally and yellow ventrally (completely black in young); no axillary scale visible in the pectoral fins (Ref. 9812, 90102).

Description: Head broad and flat; adipose eyelids vestigial (Ref. 4393). Adults without teeth; juveniles have scattered fine ciliate teeth on upper lip, very few on lower lip; tongue dentate (Ref. 4393). First dorsal fin with 4 spines, second dorsal fin with 1 spine and 8 soft rays; anal fin with 3 spines and 8 soft rays; pectoral fin with 16 rays; pectoral fin bent forward reaches front of eye; second dorsal and anal fin scaly (Ref. 4393). Scales on lateral line 26-28; scaly process at first dorsal-fin base 6-8 times in predorsal distance; no pectoral axillary scale visible; scales large, ctenoid, each with a short mucous canal; preorbital notched, denticulate, rear margin broadly rounded (Ref. 4393).

Colouration: Light olive above, silvery on sides, dirty yellowish below; dusky streaks along upper scale rows; most fins dusky, pectoral fin black in young, lower margin yellow in adults; iris with yellow reflections; a dusky fish with a truncate tail (Ref. 4393).

Ease of Identification

Meristic characteristics of Ellochelon vaigiensis

Lateral Lines Interrupted: No
Scales on lateral line 25 - 29
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle 16 - 16
Barbels 0
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 40 - 67
on upper limb
total
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 2
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 5 - 5
Soft-rays total 8 - 10
Adipose fin absent

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number 1
Spines total 3 - 3
Soft-rays total 7 - 9

Paired fins

Pectoral Attributes  more or less normal
Spines     1
Soft-rays   16 - 19
Pelvics Attributes  more or less normal
Position    abdominal  before origin of D1
Spines     
Soft-rays   
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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