The province has announced a clampdown on kokanee salmon fishing in the West Arm.
Starting May 1st anglers will still be able to do their sports fishing but it will be catch and release only.
No kokanee can be taken away.
There appears to be a shortage of the species in the West Arm.
Their numbers are already well down in the main lake.
Scientists estimate that the fish laid just over 4 million eggs last fall, down from a high of 265 million eggs back in 1981.
The kokanee fishery in Kootenay Lake remains closed.
A provincial team of experts has fast-tracked a five year action plan aimed at kokanee recovery.