Translated material
They are going to grow fish in space
Scientists are going to teach astronauts to breed fish in zero gravity. For this, a batch of sea perch will be sent to the International Space Station (ISS), from which it is planned to grow full -fledged individuals during the flight. This was reported by The Guardian with reference to the creators of the Lunar Incubator project from the Scientific Center in the city of Palava-Le-Flo in the south of France.
Now in the aquarium of the Scientific Center, several sea perches are grown, the offspring of which will be the first to be launched into space. The purpose of the project employees of the Center call the cultivation of fish on the moon and on Mars - as food for future astronauts.
“Fish is an excellent source of protein, it contains omega-3 fatty acids and important B vitamins that will be needed in space to maintain human muscle mass,” explained the project manager, marine biologist of the French National Institute for Oceanological Research of Syrill Pshibil.
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According to him, the fry will hatch from 200 eggs sent to space on the way to the ISS. Having received them, the crew of the station will have to observe the development of fry, and then freeze the fish and return to the ground, the scientist said. According to him, in case of success, the project will feed the future inhabitants of the station on the moon by sea perch at least twice a week.
Pshibila said that the ultimate goal of the project is to build a “closed food chain” on the moon, using several compartments separated from each other. The tanks are planned to be filled with water obtained by melting ice found at the bottom of craters at the lunar poles. Wastewater from these tanks can be used for the production of micro -crossbars, which will then become food for organisms filtering water like double mollusks. Part of the waste waste of fish will be collected by zooplankton. Shrimp and worms will be able to process waste and become, in turn, food for fish.
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According to the expert, the system will need four to five months to become completely autonomous. The Lunar Incubator team calculated that for weekly providing two portions of fish of seven cosmonauts on a flight of 16 weeks, about 200 sea perches will be required.
While 200 fertilized eggs of sea perch will fly to the ISS, the other 200 fry from the same parents will remain on the ground and will grow in the ground group as a control group, writes The Guardian.
The publication recalls that the first fish in space were small halves sent to orbit during one of the missions of the American Apollo in 1973. Three years later, Soviet astronauts launched several guppies into the Aquarium at the Salyut station, and in 2015, several Danio fish were sent to the ISS to study muscle atrophy.
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