How are people decorating fish tanks?

[I Kinda Fail]

I've got a room in my house that's just an aquarium room. 4 tanks in the corners for legendary fish, and a larger tank in the middle for The Legend.

I figure for The Legend, I'll add in 2-3 largemouth bass for comparison.
For the Mutant Carp, I'll add a few normal carp for comparison... but considered adding slimejack, since they can also be found nearby, and are a similar color scheme.
For the Crimsonfish, I just added red snapper (or mullet?) since they're both red ocean fish.
For the Glacierfish... I might catch 1-2 ice pips, and 1 bream, for the "icy fish" aesthetic? I'm going to have seaweed in every fish tank, but maybe not the "Winter" tank.

It's currently Fall for me, and I'm trying to decide what to add in with Angler. The anglerfish is typically known as a deep sea fish, so I was thinking about the 3 Night Market fish, since they're from the deep ocean... but I also considered the Midnight Carp, since they're from the lake in Fall, and the Angler is from the riverhead in Fall.

On a somewhat related note, anyone found creative ways to decorate with fish tanks? I think I saw someone make their shed into a Red Lobster, with a tank full of lobsters...

[tevrarain]

I put all legendaries in my tanks with algae, rocks, coral, and sea urchins for decorations

[Major Malarkey]

Originally posted by tevrarain:

I put all legendaries in my tanks with algae, rocks, coral, and sea urchins for decorations

Dang, you've got great foresight to hold onto all those legendaries. I should've done the same...

[I Kinda Fail]

Originally posted by tevrarain:

I put all legendaries in my tanks with algae, rocks, coral, and sea urchins for decorations

Ooh, I didn't think about decorating with coral! I did put a few oysters(?) in with my slimejack and mutant carp, to "clean" the water, and prevent any further mutations.

Crab pot stuff seems to have its own separate slots. So each tank, from what I can tell, can have 3 swimmers, 3 bottom critters, and 1 algae? I think? I know shrimp count as fish, but lobsters and crabs can be added alongside the 3 fish; so can oysters. I haven't tested cockles or anything else.

Might add some coral to my ocean fish tank. Thanks for the tip! I DEFINITELY wouldn't have tried putting rocks in there either...

EDIT: I checked wiki, and apparently it depends on the tank size, which makes sense. The larger fish tank can hold 3 bottom critters, 3 fish, and 3 decorations. The largest one, which will be holding my Legend, can hold 4/4 and 3 decorations.

ALSO, sea urchins can wear hats now?!