Ocellaris Clownfish vs True Percula Clownfish

The same axes for both animals, taken from the same care guides, so this is a like-for-like comparison rather than two articles written months apart. Neither animal is the right answer on its own. The question is which one fits the space, the budget and the routine you actually have.

Saltwater Fish

Ocellaris Clownfish

Amphiprion ocellaris

Difficulty

Beginner

Lifespan

10-20+ years

Adult size

3-4 in; female larger

Minimum space

79 gal

Company

Fine alone or with company

Daily time

Daily feeding; weekly water testing/changes

Running cost

High

Habitat

Aquarium 80 gal+, 3 ft+ long, for a single fish or a bonded pair

Diet

Omnivore (marine pellets, frozen, algae)

Suits you if

First-time marine aquarium keepers. Reef tanks (reef-safe). Keepers wanting a hardy centrepiece

Watch out for

Adding fish to an uncycled tank. Assuming they need an anemone to survive. No lid - clownfish jump

Full Ocellaris Clownfish guide

Saltwater Fish

True Percula Clownfish

Amphiprion percula

Difficulty

Beginner

Lifespan

10-20 years (exceptionally long-lived)

Adult size

2.5-4 in; female larger

Minimum space

79 gal

Company

Fine alone or with company

Daily time

Daily feeding; weekly water testing and changes

Running cost

High (designer morphs cost more again)

Habitat

Aquarium 80 gal+, 3 ft+ long, for a single fish or a bonded pair

Diet

Omnivore (marine pellets, frozen mysis/brine, algae)

Suits you if

Reef tanks (reef-safe). First or second marine fish, if captive-bred. Keepers wanting bolder markings than an Ocellaris

Watch out for

Wild-caught stock - Brooklynella-prone; insist on captive-bred. Paying Percula prices for a mislabelled Ocellaris. Buying a demanding anemone the fish does not need

Full True Percula Clownfish guide

How to read this

Every row is filled from the same field of the same care guide for both animals, so nothing here is cherry-picked to favour one of them.

Minimum space is the figure from each species' housing guidance, converted to one unit: the smallest space that gives the animal good conditions, not a legal minimum. It is a floor, not a target.

What this does not tell you: your experience, your household, your climate, or which animal you will actually enjoy. Difficulty is our judgement, not a measurement. Read both full guides before deciding, and if the honest answer is neither, that is a good outcome too.