Morphology Data of Mormyrops anguilloides
Identification keys
Main Ref. Skelton, P.H., 2001
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 elongated
Cross section compressed
Dorsal head profile clearly concave
Type of eyes more or less normal
Type of mouth/snout more or less normal
Position of mouth terminal
Type of scales cycloid scales

Diagnosis: head depressed, mouth large and terminal; body elongated (Ref. 13337, 52193). Chin (mental swelling) absent; origin of dorsal fin behind origin of anal fin, nearer caudal fin base than tip of snout; dorsal fin shorter than anal fin; mouth width subequal to snout length: snout long (Ref. 52193). SL/Body depth 4.9-7.5; head 3.4-5.1 times in standard length; snout almost as wide as head; interorbital space wide, head length/interorbital space 2.9-6.8; variation in meristic characteristics due to differences in geographic clines (Ref. 2915).

Description: scales small; head and body elongated; median fins set well back; caudal fin relatively small, forked with rounded lobes; head smooth and depressed in front; mouth terminal with small pointed teeth in a single row; eyes small; gill slit restricted to sides, inclined at an angle (Ref. 52193).

Coloration: grey above, lighter silvery white below, often with a bronze or yellow sheen; juveniles darker, greyish blue or brown (Ref. 52193).

Ease of Identification

Meristic characteristics of Mormyrops anguilloides

Lateral Lines 1 Interrupted: No
Scales on lateral line 71 - 100
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle 12 - 22
Barbels 0
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb


Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   0
Ventral  0
Spines total 0
Soft-rays total 21 - 33
Adipose fin absent

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number 1
Spines total 0
Soft-rays total 38 - 51

Paired fins

Pectoral Attributes  more or less normal
Pelvics Attributes  more or less normal
Position    abdominal  before origin of D1
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Palomares, Maria Lourdes D.
Modified by Bailly, Nicolas
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