5/15. Five different species, fifteen fur bearers total. I have no idea as to how this number came to be. It is the same number if your line is 27 sq. km. in size or if it is 90 sq. km..
Way back when the quota was on beaver. You were asked how many active beaver colonies you had. This was then checked out by helicopter, in late winter, by looking for the chimneys.
You had to catch 75% of the beaver which were estimated at 4 per colony. If your estimate was off by more than 25% or you did not make your 75%, you had a complication that could make you lose your line.
5/15 isn't difficult to catch in my case. However, what is the point if you cannot sell the fur? I'd rather keep things that have low breeding numbers alive (marten, fisher, lynx) for when prices go up. But I need 5 species.
The concept behind the quota is sound. We want the trap lines trapped. But times are tough right now. Between covid and fur prices, it is complicated.