When the devastating tsunami hit Japan in March 11, 2011 it dragged some 5 million tons of debris into the Pacific Ocean, according to Japanese government estimates.
Most of this likely sunk immediately, but approximately 1.5 million tons floated away from Japan's coastlines.
A local resident found the boat on the beach on March 22 and brought one of the fish to Long Beach City Hall.
The fishes which might have survived on small organisms which was present in the water.
That fish is now being exhibited in the Seaside Aquarium in Seaside, Oregon.