I dont believe so, have anything to support this refering to this species? Where I am, during summer water temps can be mid 80s or more. During winter, almost freezing. The LMB can survive a variety of different temps. In my experience though its best to keep this fish 76-78 degrees, But a wide range of temperatures will be readily accepted. Also, there is a huge lake near here called Sutton Lake. This lake is warm year round (around 75-80 degrees) because water in the lake is used to cool turbines at a power plant nearby. The lake is pretty much famous for its huge lmb and flathead catfish, the biggest fish around come from this lake....The bigger a fish is, in most cases, the older the fish is. Keeping this fish at 76-78 degrees will not affect its lifespan, this maybe true of other species...but this does not apply to the lmb IMHO.
thanks bud!
agreed