So today I managed to get 3 different ways to control your fishy with an android device working.
I'm going to have it tested by some friends tomorrow and let them decide which one I'll put in the game.
If there would be people that want to test it themselves, here are some .apk files (Android builds) with the different gamemodes:
Oh yeah. I didn't test the builds on other devices than my phone (Acer Liquid E2) yet, so I can't promise it will work on yours.