Morphology Data of Ichthyborus monodi
Identification keys
Abnormalities
Main Ref. Vari, R.P., 2007
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs no special organs
Different appearance
Different colors
Remarks

Descriptive characteristics of juvenile and adult

Striking features striking type of mouth
Body shape lateral elongated
Cross section compressed
Dorsal head profile more or less straight
Type of eyes more or less normal
Type of mouth/snout more or less normal
Position of mouth terminal
Type of scales ctenoid scales
Diagnosis

Diagnosis: snout longer than half the head length (southern Nigeria and Cameroon); body depth 5.25-7x and head length 2.8-3x SL; head 3.75-4.85x longer than wide; snout more than half of head length (53-58%); scale formula 11.5-13.5/95-100/11-13 (Ref. 2936, 86396). 92-104 (Ref. 81638) or 95-100 (Ref. 2936, 86396) lateral line scales.

Description: originally named Gavialocharax on account of its long, beak-like snout; upper jaw with 2 canines anteriorly, followed by 18-27 teeth becoming gradually smaller; lower jaw armed with single anterior canine and 17-23 lateral teeth; 25-28 scales around caudal peduncle; 7-8.5 scales between lateral line and pelvic-fin bases (Ref. 2936, 86396). Jaws very elongate and slender, with upper jaw pivoting upwards on snout to result in pronounced gape when mouth open; anterior teeth becoming progressively shorter posteriorly with posterior teeth more closely packed; caudal fin forked with lobes rounded and densely covered with small scales; 7-8 scales between anal fin origin and lateral line; D: II-III,11-13; A: II-III,13-15 (Ref. 81638). Small scales, strongly ctenoid (Ref. 2936, 81638, 86396).

Coloration: side and lower part of body silvery; back, snout and top of head olivaceous green (Ref. 2936, 86396). Preserved specimens yellowish brown; mid-dorsal region of body dark from rear of head to origin of dorsal fin (Ref. 81638). Dark mid-lateral band from eye to central part of caudal fin; a second dorso-lateral dark band from nape to base of caudal fin, joining mid-dorsal profile at level of adipose fin (Ref. 2936, 86386). Lobes of caudal fin with 2 transverse dark bands and with distal dark spots variable present on distal portions of each lobe (Ref. 81638).

Ease of Identification

Meristic characteristics of Ichthyborus monodi

Lateral Lines 1 Interrupted: No
Scales on lateral line 92 - 104
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line 11.5 - 13.5
Scale rows below lateral line 11 - 13
Scales around caudal peduncle 25 - 28
Barbels 0
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total 0 - 0
Soft-rays total 13 - 17
Adipose fin present

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number 1
Spines total 0 - 0
Soft-rays total 15 - 18

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   9 - 10
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