I've literally put thousands of hours into various save files in this game and just figured out YESTERDAY that the CC fishtank operates like all the others!
I quickly filled it with night market fish and other odd fish like the lava eel lmao
I read the whole article waiting for it to talk about the sleeping action... It wasn't until I was completely done reading before I realized they meant "don't skip this item" and not "don't have your sims sleep using this item" 😹😹😹😅