milt

Shirako translates to milt in English, in this case, cod sperm sacs.

They grabbed fish, one after another, by the tail and slid them down a chute into the hatchery building, to be stripped of their eggs and milt.

Utah Division of Wildlife Resources spokeswoman Faith Heaton Jolley says the fish eggs and milt, or sperm, are sent to a fish hatchery.

Salmon are heading up Issaquah Creek to spawn, and staff and volunteers at Issaquah Salmon Hatchery are at work, too, collecting fish for their eggs and milt.

Males then curve around the females and release milt, which fertilizes the eggs.