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Catalog – Technical Sciences – Fish spread from planes to lakes

Refilling fish from the air is a common and average activity in summer, Tell Faith Jolly, Utah Bureau of Natural Resources, to The New York Times (Utah Department of Wildlife Resources) spokesperson. With this method, fish are replanted in high altitude lakes in a condition they will not be or will have difficulty accessing by other vehicles.

Flying solution was first used in the 1950s, before fish were brought on horseback in metal milk jugs, which were released into mountain streams and lakes.

In a small plane, the pilot and accompanying biologist fly over the lakes at an altitude of about thirty meters and then scatter the trout from there. According to the agency, trout on average sail like young autumn leaves due to their small size and light weight, between 2.5 and 7.5 cm. Earth Water, they don’t hit hard, so they don’t feel pain during fall and hit the lake too. The average survival rate of fish during recharge is 95% according to previous surveys – Tell CNN spokesperson for the office.

Hatchery-bred trout biologists familiarize themselves with the temperature and pH of the lake in the ponds before loading them onto a plane, so the animals arrive in the wild acclimatized.

Their chances of survival are also improved by the fact that the whole procedure takes only a short time. In a matter of hours, planes can be used to drop 35,000 trout on a flight and travel to 40-60 lakes, which is a much faster and more effective (expensive) method than tube-fitting from a car or horseback in a lake. The trout born and raised in hatcheries is present only in the tank of the aircraft for a short time, the water is constantly pumped with oxygen during flight, so that it does not drown and does not become stressed.

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Blowing up fish in lakes always occurs in the summer, on the one hand, because trout in hatcheries grow to a sufficient size yet; On the other hand, because in winter mountain lakes freeze over their waters. During restocking, many species enter the lakes. In early July, trout, stream and tiger arrive at their new residence on board and then towards the end of the season

Also comes a stock of predatory killer trout.

Almost all introduced fish are sterile so they cannot reproduce; The killer trout is designed to prevent the overgrowth of other species. It is good for stagnant water animals, including many free-living species, to artificially increase the number of native species, so that local recreational fishing should not be restricted either.