Morphology Data of Micralestes occidentalis
Identification keys
Abnormalities
Main Ref. Paugy, D., 2003
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs no special organs
Different appearance always different morphology between mature adults
Different colors different colors in juveniles and adults
Remarks Sexual dimorphism in anal fins of adults (Ref. 2880, 81279).

Descriptive characteristics of juvenile and adult

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

Diagnosis: lateral line complete; 24-30 lateral line scales; 16-21 anal fin branched rays; 6/8 premaxillary teeth; 11-15 gill rakers on lower part of first branchial arch; caudal and adipose fins bright red; rayed dorsal fin colourless (Ref. 2880; 81279). Body height 3.1-3.3 times in standard length; head length 3.9-4.1 times in standard length; cuspid number: on external row of upper jaw 3, on internal row of upper jaw 5-7, on external row of lower jaw 3-6, on internal row of lower jaw 1 (Ref. 42032).

Description: anal fin with 3 unbranched and 16-21 branched rays; sexual dimorphism in anal fins of adults (Ref. 2880, 81279).

Coloration: body silvery, white belly and glossy lateral stripe; fine line of melanophores at base of anal fin; dorsal, adipose and caudal fins bright red, other no color; in forest zones, extremity of dorsal fin blackened adults; longitudinal band becomes black after preservation in formalin (Ref. 2880, 81279).

Ease of Identification

Meristic characteristics of Micralestes occidentalis

Lateral Lines 1 Interrupted: No
Scales on lateral line 24 - 30
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line 4.5 - 4.5
Scale rows below lateral line 3.5 - 3.5
Scales around caudal peduncle 10 - 10
Barbels 0
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 11 - 15
on upper limb
total
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total 2 - 3
Soft-rays total 8 - 8
Adipose fin present

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number 1
Spines total 0 - 0
Soft-rays total 19 - 24

Paired fins

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