This is the basics of goldfish maintenance, cleaning surface algae will make the largest visual impact on the “cleanliness” of your tank, but it’s actually the least important. Filter cleaning will have a decent impact on your water clarity and definitely will improve the filters efficiency at making the water quality healthy. When you’re tight on time but still want your goldfish to be healthy, focus on water changes and filters, and take care of surface algae later. #fish #goldfish #aquarium |

8.5K views · 336 reactions | Wrasse perform a vital cleaning function for other fish, by ridding their bodies of dead cells and parasites. Their biggest customers--literally and figuratively--are the massive manta rays. David Attenborough's Great Barrier Reef | Smithsonian Channel | Facebook