The Economic Times

Can fish populate space? In 1994, four medaka fish were flown aboard Columbia. They laid 43 eggs; 8 babies were born in space with no gravity. Adult fish, however, forgot to use one organ in their body

In 1994, Japanese astronaut Chiaki Mukai was pleasantly shocked to find that new life could indeed be born in space. Four fish he had carried with him on the space mission were able to hatch 43 eggs in space. When they returned to Earth, the hatchlings were able to grow completely normally.