Hi Teresa,
I have not been to the Japanese Garden at MGG in quite a while but a few years ago the koi pond there had way too many fish (all orange). That year we had floods from heavy rain and their koi pond overflowed. Fish were everywhere and have thought about the Memphis zoo, though. I don't know where you are in Ky. but my husband is surveying for the I-69 highway and goes up to Tiptonville a lot.