Replacement glass body for Aspire Nautilus 2.
The vast majority of tanks currently has a body made of Pyrex or other similar glass. Although such glass is relatively durable, it is not unbreakable and could easily be damaged when it falls on the ground.
Aspire Nautilus 2 can be disassembled and the glass body replaced, you do not have to buy the whole tank, but only this replacement body.