What is "fish bowls"

Usage examples of "fish bowls".

The fish flashed in myriad colors around what appeared to be one of those ornamental underwater castles to be found in large fish bowls.

Now Mike's hot off his latest world-record jump over -- I don't know -- fifty fish bowls of piranhas or something, and Maxton -- whose own popularity is fizzling -- leans over the railing and shouts, 'Hey Mr.