Clownfish can be cared for in a 10 to 20 gallon aquarium with proper filtration and temperature regulation equipment, aquascaping reef structure, lighting and pumps. Caring for the clownfish will also require the recommended water supplements and fed with the diet that is recommended for the species.
While the clownfish is one of the easier saltwater fishes to care for, it is not recommended for aquarists who are just starting with the hobby. This is because maintaining a saltwater aquarium is tedious and can be quite a demanding task. Novice aquarists are advised to start out first with a freshwater aquarium set up with freshwater fishes.
The initial setup of saltwater aquarium will also cost significantly more than a freshwater aquarium depending on the equipment and species of clownfish. Setting up the saltwater aquarium will also need to be conditioned, or mature, before the first clownfish is introduced in it. The maturing process takes around 4 to 5 weeks. Typical aquarium maintenance include regular cleaning, water changes, filter replacement and the upkeep of other aquarium equipment.
Clownfish thrive in aquarium temperatures of 73 to 80 degrees Fahrenheit. Warmer temperatures are ideal when breeding clownfish. The water should have a pH level of 8 to 8.4 and specific gravity of 1.021 to 1.026. Levels of ammonia should be kept at 0 and nitrates from 0 to 0.2 ppt.
Clownfish are not picky eaters, which means they are happy with pellets and flake food. Adding variety to their diet such as frozen food or live food will also be beneficial for them.