Ooh, ooh, I actually met someone recently that really is sending fish up into space.
He’s the head of Japanese research group looking at bone mineral density amongst other things. He told me that the Japanese space agency approached him with a vague idea and that it has actually turned into reality. It was originally planned for sometime in October, launching aboard a Russian Soyuz (sp?) craft which will transport a container (tank?) of fish to the International Space Station.
The experiment is designed to look at the effects of zero gravity on bone mineral density. Funnily enough, he told me that fish are actually the only animals that can feasibly (ethically) be sent into space now (without being permanently restrained the entire time).