Ocellaris Clownfish Care Guide
The Ocellaris Clownfish (Amphiprion ocellaris), often called the "common clownfish," is one of the most popular marine fish in the UK. Known for its bright orange colour and white bands, it's a staple in reef aquariums and ideal for beginners.
In this guide, you'll learn everything you need to know about Ocellaris Clownfish care, including tank size, water conditions, compatibility, feeding, and typical UK prices - plus how to buy or sell them locally.
Quick facts about Ocellaris Clownfish
Ocellaris clownfish are small marine fish found in coral reefs, often living in symbiosis with sea anemones. They are very similar to Percula clownfish but typically have thinner black edging around their white stripes.
They are hardy, peaceful, and widely bred in captivity.
Amphiprion ocellaris
6-8 cm
Indo-Pacific
75L (20gal)
6-10 years
Peaceful, territorial around host
24-26°C
Omnivore (pellets, frozen, live foods)
8.1-8.4
£15-£35 per fish
How Many Ocellaris Clownfish Should You Keep?
Ocellaris clownfish are best kept singly or in pairs.
- A single fish is suitable for most tanks
- A bonded pair is ideal
- Avoid keeping multiple individuals unless in large systems
Keeping more than two can lead to:
- Territorial aggression
- Fighting and stress
They naturally form pairs, with one dominant female.
Ideal Tank Conditions for Ocellaris Clownfish
Providing stable marine conditions is key to their health.
- Tank Setup: Marine or reef tank with live rock
- Substrate: Sand or reef substrate
- Live Rock: Provides shelter and territory
- Water Conditions: Stable salinity and high water quality
- Filtration: Strong filtration with protein skimming recommended
- Lighting: Moderate to reef-level lighting
Anemones are optional and not required for their wellbeing.
Compatibility with Other Fish
Ocellaris clownfish are peaceful and reef-safe.
- Good Tankmates: gobies, blennies, wrasses (peaceful species), tangs, and other community reef fish
- Avoid: aggressive fish and additional clownfish (unless paired)
They may defend their chosen territory.
Are Ocellaris Clownfish Easy to Care For?
Ocellaris clownfish are very easy to care for and ideal for beginners.
They require:
- Stable water parameters
- A mature tank
- Regular feeding
- Proper acclimation
They are one of the hardiest marine fish available.
Ocellaris Clownfish Price in the UK
In the UK, Ocellaris clownfish typically cost between £15-£35 per fish.
Prices vary depending on:
- Captive-bred vs wild-caught
- Colour variants (e.g. snowflake, black ocellaris)
- Size and quality
Designer morphs can cost significantly more.
Where to Buy Ocellaris Clownfish in the UK
Ocellaris clownfish are widely available in UK marine aquarium shops and from hobbyists.
Sourcing fish locally can:
- Reduce transport stress
- Improve survival rates
- Offer better value
TankMate UK helps connect aquarists who want to buy, sell, or rehome marine fish safely - without shipping.
Can You Sell Ocellaris Clownfish?
Yes - Ocellaris clownfish are commonly bred and sold by hobbyists.
Selling locally is often the best option, as it:
- Minimises stress for the fish
- Avoids the risks of shipping
- Connects you with responsible aquarists
TankMate UK allows you to list fish quickly and find local buyers.
Feeding Ocellaris Clownfish
Ocellaris clownfish are omnivorous and easy to feed.
Key Tips:
- Feed high-quality marine pellets or flakes
- Supplement with frozen foods like mysis shrimp and brine shrimp
- Offer small, regular feedings
- Provide a varied diet
They are not picky eaters and adapt well to prepared foods.
Common Problems with Ocellaris Clownfish
Territorial behaviour, often caused by:
- Small tank size
- Presence of other clownfish
Stress or poor condition, linked to:
- Poor water quality
- Inadequate acclimation
Disease (e.g. marine ich), caused by:
- Introduction of infected fish
- Lack of quarantine
Why Ocellaris Clownfish Are So Popular
- Iconic clownfish appearance
- Hardy and beginner-friendly
- Peaceful and reef-safe
- Widely available and affordable
- Interesting pairing behaviour
When kept correctly, Ocellaris clownfish are colourful, active fish that bring personality to any marine aquarium.
Frequently Asked Questions
Ocellaris usually have thinner black edging and are more widely available.
No, they can thrive without one.
Yes, as a bonded pair.
At least 75 litres, with stable marine conditions.
Looking to Buy or Sell Ocellaris Clownfish Locally?
TankMate UK connects aquarists who want to buy, sell, or rehome marine fish safely within their local area.
Whether you're stocking your reef tank or passing fish on to a new home, you can:
- Browse listings near you
- List your own fish in minutes
- Avoid the risks of shipping
Explore local listings with TankMate UK and find the right additions for your aquarium.