by Tia Ghose, Senior Writer | July 01, 2015 06:29pm ET
Talk about survival instincts.
A goldfish that was meant to be fish food found a hideout and lived in a tank with its predator for seven years, according to Japanese news reports.
The goldfish was tossed into the tank of an arapaima, a massive, predatory fish native to South America. But instead of going quietly to its fate, the plucky goldfish swam into a filtration unit in the tank at Japan's Shima Marineland aquarium. Workers discovered the lurker after a routine cleaning.