remember Nature abhors a vacuum, if you remove a species, then something will replace it,this was found out on the Grand banks when the cod were gone , another species replaced them , it was Lobsters, the cod there had been keeping the lobsters in check, once they were gone the lobsters thrived, I'm not suggesting there will be lobsters, but probably brown trout will move in to fill the niche, unless there is an expensive restocking program, you can't win
Derek Roxborough