o·ver·fish 
(ō′vər-fĭsh)
(ō′vər-fĭsh)v. o·ver·fished, o·ver·fish·ing, o·ver·fish·es
v.tr.
1. To fish (a body of water) to such a degree as to deplete or exhaust the supply of fish or shellfish.
2. To deplete or exhaust (a stock of fish or shellfish) by excessive fishing.
v.intr.
1. To overfish a body of water.
2. To overfish a stock of fish or shellfish.