Morphology Data of Zaireichthys kavangoensis
Identification keys
Abnormalities
Main Ref. Eccles, D.H., D. Tweddle and P.H. Skelton, 2011
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 elongated
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth sub-terminal/inferior
Type of scales
Diagnosis

Diagnosis: This species differs from Zaireichthys conspicuus, Z. kunenensis, Z. lacustris and Z. maravensis in the narrower premaxillary tooth patch, less than 33% of mouth width; from Z. monomotapa in shorter lateral line and smaller number of rays in the dorsal fin and caudal fins, II,5 vs. II,6-7 and 11-13 vs. 14-16 respectively; from Z. kafuensis in the narrower head, smaller premaxillary tooth patch and smaller numbers of rays in median fins; from Z. pallidus in the shorter barbels, e.g. maxillary 1.3±0.1 times in head length vs. 1.0±0.1, steeper snout and in the colour pattern, rows of blotches vs. pallid with fine spots (Ref. 86935).

Description: Lateral line moderate, usually ending above the anterior half of the anal fin (Ref. 86935). Snout bluntly rounded, not protruding much beyond mouth, strongly arched in profile; eye relatively large, 4.6±01 in head length; mouth width less than half head width; barbels near mean length for the genus, the maxillary barbel reaching the base of the pectoral-fin spine (Ref. 86935). Dorsal fin II,5; caudal fin slightly emarginate, with the lower lobe longer than the upper, with 11-13 branched rays; anal fin with 9-12 rays, the first 4-6 simple; pectoral fins with 6-7 branched rays, only the holotype with 7, the spine bearing 6-9 serrae (Ref. 86935). Premaxillary tooth patch narrow; branchiostegal rays 6-7, usually 7 (Ref. 86935). Vertebrae 37-38 plus the ural complex, the first haemal spine usually on the 14th vertebra but also on 15th and 16th; six pairs of ribs; humeral process long, ending between supra-occipital process and dorsal, or beyond origin of dorsal (Ref. 86935).

Colouration: A series of dark patches dorsally, a second series of about ten patches mid-laterally and a third series ventro-laterally from above back of pelvic to above base of anal, scattered brown flecks between the blotches anteriorly, becoming more widely spaced posteriorly; head marbled, cheeks pale; melanophores on body small; dark spot at tip of dorsal spine; dark patch at base of caudal fin, bar about midway along fin and trace of another bar near tip of fin (Ref. 86935).

Ease of Identification

Meristic characteristics of Zaireichthys kavangoensis

Lateral Lines 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 37 - 38

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total 2 - 2
Soft-rays total 5 - 5
Adipose fin present

Caudal fin

Attributes more or less truncate

Anal fin(s)

Fins number 1
Spines total 0 - 0
Soft-rays total 9 - 12

Paired fins

Pectoral Attributes  more or less normal
Spines     1
Soft-rays   6 - 7
Pelvics Attributes  more or less normal
Position    abdominal  behind origin of D1
Spines     
Soft-rays   
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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