Thank you for playing and for the feedback!
I revamped the feeding system for the dragonfly update, so it shouldn't crash now even if you constantly drop feed.
A koi info menu and a move function are definitely things I will add next. I will probably also add a feature to buy unlocked koi directly, as well as a way to guarantee drawing new koi you haven't collected yet. This should make it easier to collect every koi and create the pond you want.
I think I will also decrease the price of the last gacha to 50K. I hope that makes the gameplay more engaging!