Clownfish Care Guide: How to Keep Clownfish in a Reef Tank
Clownfish are the friendly faces of the saltwater world β hardy, colorful, and full of personality. At Tropical Treasures in Cheyenne, they're one of the first fish we recommend to anyone starting a marine or reef tank. If you've ever wanted a fish that recognizes you at feeding time, this is the one.
This guide walks you through everything you need to keep clownfish happy and healthy, whether you're running a fish-only setup or a full reef. Stop by the shop or call us at 307-369-1118 if you have questions along the way.
Clownfish at a glance π
- Common species: Ocellaris (the "Nemo" clown) and Percula are the easiest for beginners
- Adult size: 3β4 inches
- Minimum tank size: 20 gallons for a pair
- Temperament: Peaceful but territorial around their home
- Reef safe: Yes β they won't nip corals
- Difficulty: Beginner-friendly
Tank size & setup π
A pair of clownfish needs at least 20 gallons, though 30 or more gives them room to thrive and leaves space for tank mates. They aren't strong swimmers, so they prefer calm to moderate flow and plenty of live rock to explore and claim as territory.
Water parameters π§
Clownfish are forgiving, but stable water is the key to long-term health. Aim for a temperature of 76β80Β°F, salinity of 1.024β1.026 specific gravity, and a pH around 8.1β8.4. Keep ammonia and nitrite at zero and nitrates low with regular water changes. A reliable marine test kit takes the guesswork out of it β we stock Salifert and Hanna options in the shop.
Do clownfish need an anemone? πͺΈ
It's a myth that clownfish must have an anemone to survive. In the wild they pair with host anemones for protection, but in the aquarium they do perfectly well without one. Anemones need intense lighting and pristine water, so we usually suggest beginners wait until their tank is well established before adding one. Plenty of clownfish happily host in a frogspawn or hammer coral instead.
Tank mates π
Clownfish get along with most peaceful reef fish β gobies, blennies, cardinalfish, and small wrasses all make good neighbors. The main rule is to keep only one clownfish species per tank, since two different types will usually fight. A bonded pair of the same species, on the other hand, is one of the most rewarding sights in the hobby.
Feeding π€
Clownfish are easy eaters. Offer a varied diet of high-quality marine flakes or pellets along with frozen mysis shrimp and brine shrimp a few times a week. Feed small amounts once or twice daily and remove anything left over to keep your water clean.
Is a clownfish right for you? π€
If you're new to saltwater and want a hardy, interactive fish that looks great in any tank, clownfish are hard to beat. They adapt to a wide range of conditions, stay small enough for modest tanks, and pack a ton of character. About the only thing to watch is their territorial streak β give them a defined home and the right tank mates and they'll be content for years.
The bottom line
Clownfish are the perfect first saltwater fish: tough, beautiful, and full of personality. Start with a stable tank, pick one species, and feed a varied diet, and you'll have a thriving pair in no time. New to the saltwater side of the hobby? Pair this with our reef tank for beginners guide to get your system off to a strong start.
Ready to dive in? Visit Tropical Treasures in Cheyenne or call us at 307-369-1118 β we'll help you pick out the perfect pair and everything they need to thrive.