I called my husband up at the univ. and had him look up the article. He found more information about. It seems this was done last year as well, but half the mussles died.
Seems kind of steep for a 50% chance of nothing. He is bringing the article home and will translate the main points for me. My kanji isn't newspaper level. Anyway, if it seems interesting, I may buy one or two. The whole idea of the experiment intrigues me, plus it is to help clean up the river.
That's a big plus right there.
PS Can't believe hanami time is almost here. heehee Have to pack a picnic, some sake, call some friends and go to my favorite spot. Hanami parties are during the cherry blossom peak and people sit under the trees to look at them. The best places are always crowded and the atmosphere is very festive. One of my favorite events in Japan. Slightly after peak is really the best. The blossoms start falling and they look like snow drifting down. So beautiful.