![Checklist of Canadian freshwater fishes with keys for identification. Freshwater fishes; Freshwater fishes; Freshwater fishes. NAPE PREOPERCLE. MANDIBLE PREMAXILLARY MAXILLAR INTEROPERCLE PSEUDOBRANCH MAXILLARY BARBEL IN GROOVE TERMINAL GILL COVER ... Checklist of Canadian freshwater fishes with keys for identification. Freshwater fishes; Freshwater fishes; Freshwater fishes. NAPE PREOPERCLE. MANDIBLE PREMAXILLARY MAXILLAR INTEROPERCLE PSEUDOBRANCH MAXILLARY BARBEL IN GROOVE TERMINAL GILL COVER ...](https://c8.alamy.com/comp/RJ9KET/checklist-of-canadian-freshwater-fishes-with-keys-for-identification-freshwater-fishes-freshwater-fishes-freshwater-fishes-nape-preopercle-mandible-premaxillary-maxillar-interopercle-pseudobranch-maxillary-barbel-in-groove-terminal-gill-cover-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-scott-w-b-william-beverley-1917-crossman-e-j-edwin-john-1929-royal-ontario-museum-toronto-royal-ontario-museu-RJ9KET.jpg)
Checklist of Canadian freshwater fishes with keys for identification. Freshwater fishes; Freshwater fishes; Freshwater fishes. NAPE PREOPERCLE. MANDIBLE PREMAXILLARY MAXILLAR INTEROPERCLE PSEUDOBRANCH MAXILLARY BARBEL IN GROOVE TERMINAL GILL COVER ...
![Common Barbel (Barbus barbus). Adult swimming under water. Germany, Stock Photo, Picture And Rights Managed Image. Pic. SSJ-H-81067230 | agefotostock Common Barbel (Barbus barbus). Adult swimming under water. Germany, Stock Photo, Picture And Rights Managed Image. Pic. SSJ-H-81067230 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/147718ba0aa4a8486f3b68918e35ffef/ssj-h-81067230.jpg)
Common Barbel (Barbus barbus). Adult swimming under water. Germany, Stock Photo, Picture And Rights Managed Image. Pic. SSJ-H-81067230 | agefotostock
![Bulletin of the British Museum (Natural History). l62 A REVISION OF CERTAIN BARBUS SPECIES FROM AFRICA usual negative allometry of eye size with standard length is obscured by the high individual Bulletin of the British Museum (Natural History). l62 A REVISION OF CERTAIN BARBUS SPECIES FROM AFRICA usual negative allometry of eye size with standard length is obscured by the high individual](https://c8.alamy.com/comp/RGK00R/bulletin-of-the-british-museum-natural-history-l62-a-revision-of-certain-barbus-species-from-africa-usual-negative-allometry-of-eye-size-with-standard-length-is-obscured-by-the-high-individual-variabihty-least-interorbital-width-8-6-i2-8-m-=-lo-i-length-of-anterior-barbel-is-very-variable-1-8-5-2-mean-excluding-fishes-from-satansplatz-swa-2-9-and-for-satansplatz-fishes-2-4-in-a-few-specimens-from-satansplatz-the-barbel-is-vestigial-length-of-posterior-barbel-also-variable-2-8-8-8up-to-9-5-in-some-specimens-of-b-ivongoensis-in-this-sample-the-posterior-barbel-tends-to-RGK00R.jpg)