A fantailed goldfish Carassius auratus living in a bowl with an aquatic plant Elodea

- Image ID: B3KHFG
A fantailed goldfish Carassius auratus living in a bowl with an aquatic plant Elodea
Martin Shields / Alamy Stock Photo
Image ID: B3KHFG
A fantailed goldfish Carassius auratus living in a bowl with an aquatic plant Elodea sp The Elodea produces oxygen that the fish uses for respiration and the fish produces carbon dioxide that is used by the plants for photosynthesis