fish preview / show off option

[Orspeth]

I'd love to be able to put fish on the wall in the house -Lotro had a taxidermist where you could do just that with fish and other trophy animals!

[Quintalian]

The Fighting Fish Tank was one of my favorite furnishings in FFXI, so if they add some sort of aquarium, it's definitely going in the common room in our FC house! A fishbowl with copperfish, silverfish and goldfish together might be neat. Malm kelp and lamp marimo might finally get a use outside of leves.

An outdoor koi pond could be cool too, and would fit with the various Eastern and Doman themed items. The tri-colored carp description already mentions they're kept in outdoor garden pools.

[Gilraen]

While this would be very awesome, there's some hurdles to it's implementation. Firstly, they'd have to make models of every fish in the game. That or cheese it with flat textures that rotate with the camera to keep you from seeing 'the other side'. There's also scale. Each fish has a certain size range and the sizes of some of the fish is well beyond what would be feasible to have 'hanging next to you from your hand'. There's a few other considerations but these alone would present the bulk of it.