Smith-Root’s electroanesthesia technology is in use at a number of salmon hatcheries on the West coast of the United States. Salmon need to be checked for readiness to spawn prior to taking eggs or milt and during a spawning season they may get checked as many as five to six times. Anesthetizing the fish prior to handling them reduces stress on the fish and reduces strain on hatchery workers in handling hundreds to thousands of fish a day. Electroanesthesia can be adjusted to achieve the desired depth of anesthesia, and is chemical-free which eliminates disposal issues.

EA Installations

Smith-Root electroanesthesia systems are custom designed and installed in a variety of settings. Our engineers and biologists can help you build an system suited for your facility. View some previous installations.

Electroanesthesia Products

PES™ Portable
Electroanesthesia System

The PES™ is used to render fish unconscious and insensible quickly, without use of chemical anesthetics. The system is portable to facilitate handling and tagging activities in the field, aboard boats and ships, and aquaculture, hatchery, and other research settings.

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EA-1000B
Electroanesthesia System

Designed for application in hatchery settings, the EA-1000B allows large numbers of fish to be quickly and inexpensively anesthetized without chemicals. This technology allows the immediate release of sedated fish with no mandated withdrawal period.

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