Harley remains interested in Fish — primarily when he can drink the water.

This is not a good idea, of course, so we're thinking of getting a slightly bigger fish tank, with an actual filter system, so that we don't have to clear out some water every day or so. Oh, sure, we could stop over-feeding him, or something like that. Not sure what to do.
Any ideas out there in The Land Of The Internets?
Meanwhile, look at that water!

Um, try to ignore the dirty dish. Thanks.
She showed absolutely no interest (and needed more humidity than the aquarium provided).
And now we've got this aquarium taking up a large part of our living room!
So I'm glad at least one timneh enjoys watching fish since ours doesn't.
Oh, and Harley is as handsome as ever!