HomeWhy do fish and other living things have different roles in the aquarium?
Why do fish and other living things have different roles in the aquarium?
      An aquarium is home to many different kinds of living organisms, such as fish, plants, algae, and bacteria. Each organism performs certain roles. Together these functions maintain a stable environment inside the aquarium.

What are the functions performed by fish?  
What are the functions performed by plants?
What are the functions performed by bacteria?
What are the functions performed by algae?
What are the functions performed by snails?