Clownfish Care Guide: Setting Up Your First Reef Aquarium

Clownfish are the most iconic marine fish in the world — their vibrant orange and white coloring and charming symbiotic relationship with sea anemones have captured the hearts of aquarium enthusiasts worldwide. Hardy, personable, and endlessly entertaining, clownfish are the perfect entry point into the exciting world of saltwater reef keeping.

🏠 Tank Setup

• Tank size: Minimum 30 gallons; 55–100 gallons ideal for stability
• Filtration: Protein skimmer + live rock (1–1.5 lbs per gallon) + sump system
• Salinity: 1.025–1.026 specific gravity — use a refractometer
• Temperature: 76–80°F
• Lighting: Reef-safe LED or T5 — essential for anemones and corals
• Water: RO/DI water only
• Cycling: 4–8 weeks before adding fish

🍽️ Feeding

• Staple: High-quality marine pellets and flakes
• Frozen foods: Mysis shrimp and brine shrimp — clownfish favorites
• Feed 2x daily in small amounts

🌊 Clownfish & Anemones

• Bubble tip anemone (BTA): Most popular and hardy host
• Carpet anemone: Stunning but requires excellent water quality
• Introduce anemones only to mature tanks (6+ months old)
• Captive-bred clownfish may need time to accept a host anemone

🐠 Popular Species

• Ocellaris: The classic "Nemo" fish — most popular and hardy
• Percula: Similar to ocellaris with bolder black markings
• Maroon: Largest species, stunning with gold stripes
• Tomato: Deep red, very hardy beginner species

💧 Water Parameters

• 10–15% water changes weekly with RO/DI water
• pH 8.1–8.3, salinity 1.025–1.026, nitrate below 5 ppm for reef
• Alkalinity 8–11 dKH, calcium 380–450 ppm, magnesium 1,250–1,350 ppm

💊 Health Tips

Quarantine all new fish for 4–6 weeks before adding to your display tank. Common issues include marine ich and brooklynella (clownfish disease). Never add fish directly from the store to your reef.

Explore our Clownfish Collection for all the premium marine supplies you need to create a stunning reef aquarium! 🐠