A Chinese restaurant in Changchun city has been criticized for keeping 20 fancy carp in an over 12-foot-long urinal trough in the mens’ bathroom.

The restaurant says the fish are not in any danger and that the water is running and staff change the water at least twice a day and add oxygen into the water much like a regular fish tank.

The restaurant’s owner adds the fish are just an attraction and not used in dishes.

Guests say they’re surprised to see the fish swimming in the trough which has a sign saying, "Please urinate here" above it.