What am I supposed to do? If I can't figure out what his preferences are, then I don't know what to aim for...

This might be a bit underhanded, but what if I made fish look bad to him? Maybe then he'll start to like people...

I-Inoue-kun, even with all that said, you can't touch or anything like that... you'll get hurt! (physically)

There...

There are scales and stuff, you know...?