But not decorative small one, you could be able to make a water-tank with any blocks(glass amazing) and after filling it with water with the new tool and add someway to catch new underwater enemies/animals and place them after on the tank , maybe a variety of under water wildlife on varoius planets(like ocean planets and islands) Also decorative items for the tank, as big chests with a diver near
With the new liquid moving abilities added in the nightly it wouldn't be hard to be able to have some item that could catch fish from water on planets in the same fashion as capture pods, and then you throw them into the tank and they pop out as creatures and swim around. This idea is entirely do-able, and I definitely agree with it. I mean literally all the systems are already in place in the game, (though the capture pod thing would need a little tweaking so the fish don't follow you)
nice thoughts, i think they could change the way to capture under water wildlife if this would supposed to be a problem, instead of the pods it could be used a fishing pole or something similar,