Morphology Data of Zaireichthys conspicuus
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 kafuensis, Z. kavangoensis, Z. monomotapa and Z. pallidus in having a premaxillary tooth patch with the buccal margin expanded laterally and from all other species in its more robust form and bold markings (Ref. 86935).

Description: Somewhat more robust Zaireichthys than other species of the genus (Ref. 86935). Lateral line short, ending at about vertical through base of pelvic fins; skin of dorsal surface of head and body with minute papillae (Ref. 86935). Supra-occipital process small, shorter than eye diameter, narrow and pointed; snout blunt; eye moderate; length of tube of anterior nostril about half height of tube of posterior nostril; mouth broad with fleshy lips; barbels relatively short (Ref. 86935). Dorsal fin II,6; base of adipose fin extending nearly to the first procurrent ray of caudal; caudal fin sub-truncate, with the lobes equal or the upper lobe slightly longer than the lower, with six branched rays in the upper lobe and seven in the lower; anal fin with 9-11 soft rays, the first 3-4 unbranched; pectoral fins rounded, not reaching rear end of dorsal-fin base, with 7-8 branched rays, pectoral-fin spine bearing 5-7 serrae; pelvic fins reaching just beyond origin of adipose fin, not extending to anal fin (Ref. 86935). Premaxillary tooth plate with the buccal margin expanded postero-laterally, the lateral extension being about one third the length of the bone; premaxillary teeth in 5-6 rows, the outer row with 6-7 and inner row with about 16 teeth on each side (Ref. 86935). Vertebrae 34-35, followed by the ural complex; six pairs of ribs, borne on parapophyses which are broad-based, attached to the anterior and posterior ends of the centra and each having a wide basal foramen between the branches; first haemal spine on the 14th or 15th vertebra; anal fin with 8-10 pterygiophores associated with the haemal spines of the vertebra 19-25 or 20-26 (Ref. 86935).

Colouration: Background beige with faint orange tint in adipose and upper caudal fin, yellowish on preservation; dorsal surface of body with a series of five dark brown/black patches, one below the base of the dorsal fin, another between the dorsal and adipose fins, two more below the adipose fin and the last on the caudal peduncle; a series of large, dark blotches mid-laterally and a lower series, one above the base of the pelvic fin, another above the origin of the anal fin and the third behind the base of the anal; the patches are often confluent, forming a reticulated pattern, or even broad vertical stripes; head brownish dorsally with yellow cheeks; caudal fin with a vertically elongated dark bar at its base and with a dark zone midway along the fin; anal fin with a dark band and pectoral fins with one or two such bands, the outer of which is faint (Ref. 86935).

Ease of Identification

Meristic characteristics of Zaireichthys conspicuus

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 34 - 35

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total 2 - 2
Soft-rays total 6 - 6
Adipose fin present

Caudal fin

Attributes more or less truncate

Anal fin(s)

Fins number 1
Spines total 0 - 0
Soft-rays total 9 - 11

Paired fins

Pectoral Attributes  more or less normal
Spines     1
Soft-rays   7 - 8
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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