Morphology Data of Chelon dumerili
Identification keys
Abnormalities
Main Ref. Albaret, J - J., 2003
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral fusiform / normal
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

Diagnosis: 8-9 anal soft rays; anal fin and lower lobe of caudal fin whitish or greyish (Ref. 57400). Body with ctenoid scales except for anterior predorsal scales which are cycloid and extend to anterior nostril or slightly beyond (Ref. 81659). Scales numerous (Ref. 57400), not large, 33-41 in a longitudinal series (excluding scales on caudal fin base), 11-14 scale rows between pelvic and first dorsal fin (Ref. 81659). 5-8 mucous canals on scales in front of 1st dorsal fin (only 1, less often 2 or 3, in other Liza species (Ref. 57400). Posterior end of maxilla sigmoid, curved down over premaxilla; serrate, anteroventral edge of lachrymal distinctly concave; pharyngobranchial organ with 1-2 valves, anteroventral valve a moderate size, semi-lunate flap, posterior valve usually vestigial, as a small nodule or, at most, a low papillate fold, and may be absent (Ref. 81659).

Description: body rather elongate (Ref. 57400, 81659), rather slender, reaching its greatest depth at level of 1st dorsal-fin origin (Ref. 57400). Head large; interorbital space almost flat; no adipose eyelid (Ref. 57400). Snout more or less pointed (Ref. 81659). Upper lip thin, not ornamented (Ref. 57400). Upper lip with outer row of close-set teeth, with slightly flattened, blunt unicuspid tips (Ref. 81659). 1-3 inner rows of teeth may be present (Ref. 57400, 81659), usually one row, sometimes no inner rows visible (Ref. 81659). Inner rows well separated from outer row, and teeth may be bicuspid and usually smaller and more widely spaced than outer row teeth; lower lip usually without teeth, rarely, outer margin of lip with sparse, minute ciliiform teeth; angle of mouth at dentary symphysis 90° or more, but usually less obtuse than in L. grandisquamis and L. falcipinnis (Ref. 81659). Hind end of upper jaw reaching a vertical line passing between posterior nostril and anterior eye margin; maxillary partially visible below corner of mouth when closed (Ref. 57400). In specimens >30 mm SL, some scales may have several radial grooves: 1-14 grooves on predorsal scales, 1-6 on interdorsal scales, 1-4 on scales of dorsal and ventral parts of caudal peduncle, 1-5 on opercular and infraorbital scales, and 1-2 on some scales on ventral parts of body; scales on lateral parts of flanks usually with one groove (Ref. 81659). Origin of 1st dorsal fin equidistant from snout tip and caudal-fin base (Ref. 57400). Second dorsal fin with 9 segmented rays (Ref. 81659). Anal fin with 3 spines (Ref. 81659) and 9 (rarely 8) segmented rays (Ref. 57400) in adults (1st spine very short and usually hidden by overlying scales)(Ref. 81659). Anal fin usually with 2 spines and 10 segmented rays in juveniles <30 mm SL (Ref. 81659). Anterior areas and bases of 2nd dorsal and anal fins covered with some scales (Ref. 57400). No axillary process (Ref. 57400). Pectoral fin 81-105% of head length, with 1 short, unsegmented ray dorsally and 14-17 (usually 15 or 16) longer, segmented rays; 4-7 (usually 6) pyloric caeca, not bifurcate, ventral 2-3 caeca usually longer than dorsal caeca (Ref. 81659). Dorsal scales in front of 1st dorsal fin with 5-8 mucous canals (in specimens longer than 12 cm SL)(Ref. 57400).

Coloration: brownish dorsally; approximately 6 vague, darkish bands on upper part of flanks; silvery ventrally; yellowish gold spot posterodorsally on opercle; pelvic fins pale; other fins dusky, especially anterior parts of second dorsal and anal fins and distal parts of caudal fin; anterodorsal parts of pectoral fins speckled with fine black pigmentation (Ref. 81659).

Ease of Identification

Meristic characteristics of Chelon dumerili

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales
Scales in lateral series 36 - 39
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
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes
Fins number 2
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 5 - 5
Soft-rays total 8 - 9
Adipose fin absent

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number 1
Spines total 3 - 3
Soft-rays total 8 - 9

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   16 - 16
Pelvics Attributes  more or less normal
Position    before origin of D1
Spines     1
Soft-rays   5 - 5
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Garilao, Cristina V.
Modified by Musschoot, Tobias
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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