Furry Diary

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Black Ocellaris Clownfish

Amphiprion ocellaris

Also called Black Ocellaris, Darwin Ocellaris, Darwin False Percula

VarietyShort profile

From A natural colour form of the ocellaris clownfish found only around Darwin in Northern Australia; almost all fish in the hobby are captive-bred12

At a glance the quick version

Length8 to 11 cm34
Lifespan6 to 12 years567
Sizesmall
Striking black and white look
Peaceful by clownfish standards
Easy care level and accepts a wide range of foods
14

Looks how to spot one

Coloursblack with three white bandsjuveniles orange, darkening to black with age1

Personality what they are like

Calm and peaceful for a clownfish, though it will claim and defend a favourite spot in the tank.42

Daily activity how busy a day looks

Stays close to a chosen home base such as an anemone, coral or rock and bobs in and out of it rather than roaming the whole tank.72

Grooming and care the hands-on bits

A fully marine fish. Suggested aquarium water: about 22 to 26 °C (72 to 78 °F), pH 8.1 to 8.4, carbonate hardness 8 to 12 dKH and specific gravity 1.020 to 1.025. Rated easy to care for, and it does not need an anemone to do well.4

Home where they are happiest

A saltwater reef or fish-only aquarium of at least about 76 L (20 US gallons), with rockwork or a host anemone or coral to settle into.42

Food basics what goes in the bowl

An omnivore that readily takes marine flakes, pellets and frozen meaty foods, with some algae-based food in the mix.42

Company who they like around

Best kept alone or as a bonded pair. Two young fish put together will settle into a pair, with the larger one becoming the female.23

The story where it all began

This black form occurs naturally only in a small area around Darwin, Northern Australia, so wild fish are hardly ever exported. Aquaculture breeders took it on, and today captive-bred fish supply nearly the entire hobby. Scientists have discussed whether it deserves species status, but it is still treated as a colour variety of the ocellaris clownfish.1

Fun facts for the dinner table

  1. 1

    It is also called the Darwin Ocellaris after the Australian city near where the wild form lives.1

  2. 2

    Babies hatch looking like ordinary orange clownfish and only turn black as they grow.1

  3. 3

    Like all ocellaris clownfish, every fish starts life as a male, and the dominant one becomes female when the group needs one.5

  4. 4

    Clownfish talk to each other with clicks and pops made by snapping their jaws.8

Recognised by the official bits

IUCN Red List
Parent species Amphiprion ocellaris assessed as Least Concern; the black form is treated as a colour variety, not a separate species3
ORA (aquaculture breeder)
Classed as a colour morph of A. ocellaris; its status as a possible separate species has been debated1

The care rhythm Furry Diary remembers it for you

A typical home-care rhythm for a Black Ocellaris Clownfish. It is our own starting plan, not a vet's advice, and you can change every line in the app.

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Owner questions the things everyone asks

How often should I feed my Black Ocellaris Clownfish?

Feed small amounts once or twice a day. Furry Diary's starting plan suggests daily feedings in small portions. This keeps your clownfish healthy without overfeeding. Furry Diary plan

What does a Black Ocellaris Clownfish eat, and what should it never eat?

It's an omnivore that enjoys marine flakes, pellets, frozen meaty foods, and some algae-based food. As for what it should never eat, that varies by individual; ask a vet or experienced breeder for a safe list.42

How much space does a Black Ocellaris Clownfish need?

A saltwater aquarium of at least 76 liters (20 US gallons) is recommended. Provide rockwork or a host anemone or coral for it to settle into.42

What temperature, light or water does a Black Ocellaris Clownfish need?

Keep water temperature between 22 and 26°C (72-78°F), pH 8.1-8.4, carbonate hardness 8-12 dKH, and specific gravity 1.020-1.025. Lighting needs are not specified, so ask a good breeder or vet for guidance.4

How often should I clean a Black Ocellaris Clownfish's home?

Furry Diary's plan suggests cleaning the glass weekly, testing water weekly, and doing a 10-20% water change every two weeks. Also top up evaporation daily with fresh RO water. Furry Diary plan

Can a Black Ocellaris Clownfish live with others?

Yes, it's best kept alone or as a bonded pair. If you put two young fish together, they will form a pair with the larger becoming female. It is calm but will defend its favorite spot.23

How long does a Black Ocellaris Clownfish live?

With good care, they typically live between 6 and 12 years. Provide stable water conditions and a proper diet to help them reach their full lifespan.567

Can I handle a Black Ocellaris Clownfish?

Handling is not recommended as it can stress the fish and damage its protective slime coat. If you need to move it, ask a vet or experienced aquarist for the safest method.

Written from the sources on this page, a few checked guides (VCA, ASPCA, RSPCA) and Furry Diary's own starting care plan. A friendly guide, not a vet's advice.

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Where this comes from

Every breed page shows where each fact comes from. If we got something wrong, sorry, we are pet people, not a science magazine. Tell us at support@furrydiary.app and we will fix it.

  1. ORA (Oceans, Reefs and Aquariums): Black Ocellaris Clownfish orafarm.comused for origin, colour development, history, taxonomy note, names
  2. Wikipedia: Ocellaris clownfish en.wikipedia.orgused for wild black form in Northern Australia, pairing, diet
  3. FishBase: Amphiprion ocellaris fishbase.seused for size, IUCN status of parent species
  4. LiveAquaria: Ocellaris Clownfish quick stats liveaquaria.comused for care level, temperament, max size, tank size, water parameters, diet
  5. Florida Museum of Natural History: Clown Anemonefish floridamuseum.ufl.eduused for lifespan, sex change
  6. Animal Diversity Web (University of Michigan): Amphiprion ocellaris animaldiversity.orgused for lifespan
  7. Aquarium of the Pacific: Clown Anemonefish aquariumofpacific.orgused for lifespan, home-base behaviour
  8. Wikipedia: Amphiprioninae en.wikipedia.orgused for sound production
  9. VCA Animal Hospitals: Feeding times and frequency for your dog vcahospitals.comused for owner questions
  10. ASPCA: Dog grooming tips aspca.orgused for owner questions
  11. ASPCA: Cat grooming tips aspca.orgused for owner questions
  12. ASPCA: People foods to avoid feeding your pets aspca.orgused for owner questions
  13. RSPCA: What to feed your rabbit rspca.org.ukused for owner questions

Checked 2026-09-30. Text is written in our own words from these sources.