Clark's Clownfish care

Amphiprion clarkii · Saltwater · Beginner level care

A tough, adaptable clownfish that gets larger than the ocellaris.

Smallest tank40 gallons

Adult size5 inches

Temperature76 to 80°F

pH8.1 to 8.4

GroupOne per tank

TemperamentSemi aggressive

SwimsMiddle of the tank

Lives8 to 12 years

Watch for: Territorial and tough on tankmates, especially other clownfish.

Feeding

Twice a day. A small pinch they finish in about 2 minutes, a little more for bigger fish. Marine pellets, mysis, frozen brine shrimp.

Claims a territory and guards it.

Fish that pass every check with Clark's Clownfish in a 80 gallon tank: same water, overlapping temperature, nobody gets eaten and no bullies.

What size tank does a Clark's Clownfish need?

At least 40 gallons. Adults grow to about 5 inches, so plan for the adult size, not the size at the store.

What temperature does a Clark's Clownfish like?

76 to 80 degrees Fahrenheit, with a pH of about 8.1 to 8.4. A steady temperature matters more than hitting one exact number.

How many Clark's Clownfish should I keep together?

Keep only one. Clark's Clownfish fight their own kind.

What do Clark's Clownfish eat?

Marine pellets, mysis, frozen brine shrimp. Feed twice a day: a small pinch they finish in about 2 minutes, a little more for bigger fish.

Checked against these sources on 2026-11-10. When sources disagree we use the safer number.