SURGERY OF THE
The biggest problem
with most eradication programs is that of disposing of the windrows of dead
fish on shore. If the fish aren't picked up and used for food, their presence
soon becomes common knowledge. Waters treated with Fish-Tox remain toxic to
fish for periods varying from 10 to 80 days, depending upon the water
temperature. Warm waters dissipate the poison much faster than chill
This is the new
surgery of the fisheries world and, like medicine's surgery, it is a drastic
step to be used only when the situation has become desperate. Now fishery
biologists are discovering new uses for the killer in limited forms of surgery.
It is possible to cut down carp populations without harming game fishes by
baiting the undesirable fish into shallow bays or inlets, sealing off the
escape route with seines, and then applying Fish-Tox.
desirable fish can also be thinned out. Two interconnected lakes swarming with
rock bass yielded poor fishing because there just wasn't enough food. So one
lake was dosed, and the population of the other spread to the now-fishless
waters. The rock bass grew larger.
Fish-Tox has even
turned out to be a boon to ducks. The Fish and Wildlife Service used it in the
big Arrow-wood Refuge in North Dakota to kill the carp so that duck foods would
prosper. In most cases, however, it is the angler who benefits from this modern
refinement of one of the oldest poisons known to man.