Thanks for the feedback! I was discussing FC3 compatibility with another dev today, and in the case of Freaky Fish DX the fix was fairly easy. I have added a v1.3 disk image to the downloads which should fix the problem with the FC3 fast saver.
Great! Thanks for the very fast fix. Freaky Fish is not the only from the newer released C64 games, that has this problem with the score-saver, when a FC3 is activ. The problem is caused by the fastloader of the FC3, but it can be circumvented, as can be seen.