mines a cylinder and I have 2 mollies in it which is pretty small for them- they're supposed to be in a 10 gallon + but they're content. It's a plastic tank, not glass- not anything special but it works very well... It's the one with multiple LED
settings built in... I dunno if that's so good for the fish but you can have this hilarious like disco aquarium if you so choose... Pretty good... And really really cheap... Lol (somehow more expensive than the fish themselves still..)
I think there are very similar tanks by this brand GLO fish which is almost identical...