From the Regs
Province-wide maximum possession – All fish kept from any lake or stream, from any Watershed Unit, count as part of the province-wide maximum possession that must not be exceeded. The maximum number of fish you may have, including fish at your home and fish caught under a special harvest licence, for each game fish species or group of species is listed below:
• Trout and Arctic Grayling – 5 in total, combined of:
0 bull trout (native to Alberta);
2 Northern Dolly Varden (stocked in Chester Lake only);
1 golden trout;
2 Arctic grayling;
3 lake trout;
5 cutthroat trout;
5 rainbow trout;
5 brown trout;
5 brook trout.
•Mountain Whitefish – 5 in total.
•Walleye and Sauger – 3 in combined total.
•Northern Pike – 3 in total.
•Yellow Perch – 15 in total.
•Lake Whitefish and Cisco (Tullibee) – 10 in combined total.
•Goldeye and Mooneye – 10 in combined total.
•Burbot (Ling) – 10 in total.
•Lake Sturgeon – 0
•Non-game fish – no restriction on the numbers kept.
NOTE: The limits and size restrictions that exist at specific lakes and streams are listed in the Watershed Unit sections of each Fish Management Zone.
Check the regs. here is the link
http://albertaregulations.ca/fishing...ml#catchlimits
Province wide maximum applies overall. Specific lake and stream limits are to be followed. CO may look for proof as to where fish came from. I dont know never ran into this situation myself.