What do you put in the fish tank for decoration?

Decoration pays attention to collocation, and different kinds of ornamental fish use different ornaments. Small freshwater fish can use aquatic plants, marine fish can put corals, and large ornamental fish can use background boards directly without aquatic plants.

No matter what kind of ornamental fish, you can usually put some beautiful pebbles and rockeries at the bottom of the fish tank. So that even if the fish shit falls, it won't be seen at a glance. At the same time, stones and rockeries can be used to hide the water circulation and oxygenation system in the fish tank.