Environmental Technologies, Inc. (ETI) is the world's leading supplier of damage-free fish transfer systems with ove r2000 systems delivered worldwide. ETI's TRANSVAC® vacuum pump was introduced in 1982. The TRANSVAC® is designed primarily for transferring wild fish from fishing vessels to shore-based processing plants without damage. The TRANSVAC® and other vacuum pumps have also been used to transfer live fish with mixed results. Repetitive pumping of damage sensitive species, with a vacuum pump, often causes high rates of stress and occasional mortality. The SILKSTREAM™ was designed specifically for transfer of live fish. Introduced in 1988, it took two years to design. Today there are more than 200 SILKSTREAM™ systems being used around the world, to transfer live Salmon, Trout, Tilapia, Yellow Tail, King Fish, Fugu, Sea Bass, Sea Bream and other species.