The system includes a capsule member made from a material which is not dissolvable
in water but is dissolvable in the digestive fluids of a predator fish. The capsule
contains a material which, following ingestion by a predator (game/sport) fish,
results in death of the predator fish. A connecting member is secured to the capsule,
and is adapted to be secured to a prey (bait) fish such that when the prey fish
is released in a body of water, such as a lake, in the vicinity of the predator
fish, the predator fish is likely to consume the prey fish along with the capsule
and shortly thereafter dies, thereby reducing the number of predator fish relative
to the number of prey fish.