Morphology Data of Ctenopoma gabonense
Identification keys
Abnormalities
Main Ref. Norris, S.M., 2008
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
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

Diagnosis: dorsal fin with 19-21 spines and 9-11 (8 rare) soft rays; anal fin with 9-11 spines and 9-11 (8 rare) soft rays; 12-14 (mode 13) pectoral fin rays; dorsal profile straight; snout acute; body rectangular; pelvic fin lightly pigmented in adults; no oblong bar along caudal peduncle; overall pigmentation usually brown (Ref. 81650).

Description: head and snout relatively acute; dorsal profile flat, with body deepening steadily from snout to maximum depth (approximately at dorsal origin); anal and dorsal fins pointed in both sexes; 13-19 scales in upper, 11-16 in lower lateral line; 2-4 scales above upper lateral line, 7-9 below it; 2-16 serrations above opercular notch, 0-10 serrations within notch, 2-16 serrations below, 2-22 subopercular serrations, 0-11 serrations on interopercle; preopercle rarely serrated (Ref. 81650).

Coloration: body and head of adults dark brown, frequently lighter brown or tan ventrally; flanks sometimes with 8-10 dark bars that do not continue onto unpaired fins and decrease in clarity with maturity; preserved specimens over 100 mm SL may be very dark overall with no apparent barring or counter-shading; adult specimens (> 80 mm SL) have diffuse black pigment in pelvic fins; opercular membrane in opercular notch black; juvenile specimens (up to 40 mm SL) with 8-9 dark bars, each a single scale row wide; juveniles also have a slight concentration of pigment near soft dorsal base, and their pelvic fins are clear (Ref. 81650).

Ease of Identification

Meristic characteristics of Ctenopoma gabonense

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales
Scales in lateral series 28 - 30
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Barbels 0
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total
Vertebrae
preanal
total 30 - 30

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   0
Ventral  0
Spines total 19 - 21
Soft-rays total 8 - 11
Adipose fin absent

Caudal fin

Attributes

Anal fin(s)

Fins number 1
Spines total 9 - 11
Soft-rays total 8 - 11

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   12 - 14
Pelvics Attributes  
Position    
Spines     
Soft-rays   
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Boden, Gert
Modified by Musschoot, Tobias
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cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17