Morphology Data of Heteromycteris proboscideus
Identification keys
Abnormalities
Main Ref. Desoutter, M., 2003
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks

Descriptive characteristics of juvenile and adult

Striking features flatfish
Body shape lateral other (see Diagnosis
Cross section flattened
Dorsal head profile clearly convex
Type of eyes other (see Diagnosis)
Type of mouth/snout other (see Diagnosis)
Position of mouth sub-terminal/inferior
Type of scales
Diagnosis

Diagnosis: flat and asymmetric body; eyes located on right side of head, except in reversed individuals; preopercle covered by skin and opercle entirely scaled; mouth small, more or less arched and inferior; dorsal and anal fins lacking spinous rays and separated from caudal fin; dorsal fin originating on upper edge of mouth; pectoral fins absent; pelvic fins asymmetrical, the one on eyed side united to anal fin; lateral line straight along each side; body covered with ctenoid scales (Ref. 57416).

Description: anterior profile widely rounded, ending in very broad, slightly prominent snout that is extended ventrally into long hook-shaped appendix; eyes small, dorsal eye widely separated from head profile; eyed side with single nostril, anterior being simple tube, left side with two close-set nostrils located above mouth, anterior represented by tube ending in slightly enlarged and rosette-shaped opening (Ref. 57416).

Colouration: eyed side yellowish, mottled with brownish-black and a number of irregular, paler spots scattered over its entire surface; in some specimens there is series of brown spots at bases of dorsal and anal fins; these fins always comprise some odd blackish rays (Ref. 57416).

Ease of Identification

Meristic characteristics of Heteromycteris proboscideus

Lateral Lines 1 Interrupted: No
Scales on lateral line
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes extending over most of the back length
Fins number 1
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 0 - 0
Soft-rays total 104 - 113
Adipose fin absent

Caudal fin

Attributes more or less truncate; more or less normal

Anal fin(s)

Fins number 1
Spines total 0 - 0
Soft-rays total 72 - 74

Paired fins

Pectoral Attributes  absent
Spines     
Soft-rays   
Pelvics Attributes  other (see Diagnosis)
Position    jugular  behind origin of D1
Spines     
Soft-rays   
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