Very unusual idea! Like it a lot. You could of expanded the story abit. I did like the bit about putting it purified water. I raised and showed tropicals for years. Just saying! Enjoyed your various stories quite a bit too! I do some critiquing so sometimes if I mention something you disagree with, just e me. You should try some regular fiction writing. You've got a good stlye.
Good writing!

Loved the idea of the fish and what it says about 51st century hearing, though it does make me wonder how Jack survives the daily noise of our society without going mad.

I liked this a lot. What a super creature - wish I'd thought of it!