Base game fish tanks

In modern aquaculture, fish tanks are considered more humane than fish bowls. I think it would be a bad idea to actually remove the "Fit4Fish Crystal Fish Bowl" (or other small one-fish aquariums) from the game entirely, as it would ruin a large number of official and user-made builds. At the same time, the game already has programming to handle fish tanks, because the following items exist:

• "Perfect Private Aquarium" from Spa Day
• "Swimming with the Fishes" from Spa Day
• "Sea Plus Aquarium" from Dine Out
• "Harbor in a Box Aquarium" from Cats & Dogs

I think players could use a generic, "archetypal" version of this object - one whose exterior looks more like something one could buy at a pet store than Perfect Private Aquarium and Sea Plus Aquarium do, but that has a generically "archetypal" interior (with a castle like Fit4Fish, or just plants/coral/rocks like Perfect Private and Sea Plus do) compared to Harbor In a Box Aquarium's New England theming or Swimming With the Fishes' zen garden theming.

Previously we've had a category of build mode item that existed across multiple packs receive a base game version via a patch: the "bonfire" type objects got a base-game version in patch 170, so this wouldn't be without precedent.