Culling diseased trout in zero-kill streams?
Q: We were fishing Hot Creek in Mono County last weekend, and my friend caught a rainbow trout that looked unhealthy. We thought it might have whirling disease. (See photo at californiaoutdoors.files.wordpress.com/2011/06/rainbow-whirling-disease.jpg.)
Based on the picture, is this a likely case of whirling disease? Have fish with this disease been found in Hot Creek before? Assuming this was a case of whirling disease, what should we have done? We never keep fish and Hot Creek has zero-kill regulations, but it would seem wise to remove a whirling-diseased fish from the stream to give to the Department of Fish and Game (DFG) for examination.