Picasso Triggerfish

Picasso Triggerfish (Rhinecanthus aculeatus) is native to Indo-Pacific reef ecosystems. Wild populations distribute across coral reefs from East Africa through Indonesia, the Philippines, and into the western Pacific. Captive-bred Picasso Triggerfish is increasingly available and is the more sustainable choice when you can find it.

Picasso Triggerfish requires a minimum of 75 gallons for healthy adults. The minimum is based on 10 inches adult size and territorial range. For Picasso Triggerfish, plan a mature reef tank with stable parameters, sand bed, live rock for cover, and reef LED if photosynthetic.

Picasso Triggerfish requires standard reef parameters: temperature 76-80°F, specific gravity 1.025, pH 8.1-8.4, alkalinity 8-9 dKH, calcium 420-450 ppm, magnesium 1300-1400 ppm, ammonia + nitrite 0 ppm, nitrate under 10 ppm. Use a refractometer (not hydrometer) to measure salinity.

Picasso Triggerfish is a carnivore. Provide frozen mysis, brine, finely chopped seafood, and quality carnivore pellets. Live food triggers feeding response in stressed arrivals. Browse our food guides for product recommendations.

Picasso Triggerfish is best paired with peaceful reef-tank species in similar size class. Avoid known fin-nippers and large aggressive species.

Picasso Triggerfish reaches 10 inches at adulthood with a captive lifespan of 8-10 years with proper care.

Picasso Triggerfish breeding in captivity ranges from straightforward to very difficult. Captive-bred specimens are increasingly available from sustainable aquaculture facilities.

Picasso Triggerfish is susceptible to ich, velvet, marine flukes, and bacterial infections. Quarantine new Picasso Triggerfish for 4-6 weeks before adding to display.

Picasso Triggerfish is sold at LFS, online retailers, and direct from breeders. Browse live Picasso Triggerfish from vetted Fast Aquatics vendors with carrier-tracked overnight shipping, climate-aware hold logic, and a 4-hour DOA window with photo-evidence claims.