Mark Bradbury, manager of Water World in Romsey, England, said the 3-foot sturgeon escaped during the winter floods of early February and was found in a deep puddle at a car wash about a mile from the center, the Daily Telegraph reported Monday.
Bradbury said he was "hugely relieved" to have the fish recovered alive.
"He must have crossed the road and got to the petrol station through the flood water," Bradbury said. "He's got a few bumps and scrapes but is happy to be back with his friends."
Bradbury said a koi carp that escaped at the same time as the sturgeon has yet to be located.
Bradbury estimated the sturgeon to be worth a possible $1,600.