Zep, the IL and KS threadinfins definitely died each winter, for example. Those states would often keep threadfin brood stock in a power plant lake with warm water discharge. The use of annual threadfins stockings in Midwestern states is a lot more limited than in the past.
The problem in the far south is that they survive most winters, but have occasional die offs in especially cold winters to mess up the best plans of men and mice. I'm sure you know that part.
Yeah, this book larning is a two-edged sword these days. Ha!!
