FastAquatics

Live offers for Picasso Triggerfish

Checking vendor inventory…

Notify me when Picasso Triggerfish is back in stock

Saltwater Fish

Picasso Triggerfish

Reviewed by the Fast Aquatics husbandry team · Updated October 2026 · Sources

Rhinecanthus aculeatus

Care guide, husbandry, breeding, disease, and sourcing intelligence on Picasso Triggerfish - written by the Fast Aquatics editorial team.

Picasso Triggerfish at a glance
Adult size: 10 inches · Min tank/pond: 75 gallons · Difficulty: intermediate · Diet: carnivore · Lifespan: 8-10 years.

Picasso Triggerfish (Rhinecanthus aculeatus) is a popular saltwater fish in the aquarium and pond hobby. Suitable for keepers with 6-12 months of stable-tank experience.

Where Picasso Triggerfish comes from

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 tank size and setup

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.

Water parameters for Picasso Triggerfish

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.

What Picasso Triggerfish eats

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 tankmates and compatibility

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

Picasso Triggerfish adult size and lifespan

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

Can you breed Picasso Triggerfish?

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

Common Picasso Triggerfish diseases and problems

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

Where to buy Picasso Triggerfish online

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 2-hour DOA window with photo-evidence claims.

Frequently asked questions about the Picasso Triggerfish

What size tank does the Picasso Triggerfish need?

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.

Is the Picasso Triggerfish hard to keep?

The Picasso Triggerfish is rated intermediate difficulty on this care sheet. It needs a tank of at least 75 gallons. Adults reach about 10 inches and live 8-10 years. Picasso Triggerfish (Rhinecanthus aculeatus) is a intermediate-care saltwater species that thrives in tanks of 75 gallons or larger with stable parameters. Best paired with peaceful tankmates of similar size and water-chemistry needs.

What does the Picasso Triggerfish eat?

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. For Picasso Triggerfish, plan a mature reef tank with stable parameters, sand bed, live rock for cover, and reef LED if photosynthetic.

Where does the Picasso Triggerfish come from in the wild?

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.

Other species in the same category with care profiles on Fast Aquatics. Click any name for the full husbandry breakdown.

Berghia NudibranchPainted FrogfishMajestic AngelfishRed Knob StarfishProtoreaster linckiThree-Spot DamselfishEmerald Crab

Sources and references

Picasso Triggerfish taxonomy and care recommendations cross-checked against the following authoritative references and our internal vendor + breeder database.

Have a photo of Picasso Triggerfish?
Approved photos go live in 24 hours, with credit (or anonymous - your call).

More resources for Picasso Triggerfish keepers

Common diseases
Helpful calculators
Key terms

Browse the full disease database, calculator collection, aquarium glossary, or Q&A library for additional reference.

More saltwater fish species

angelfish marblebluestripe pipefishafrican leopard wrasseangelfish platinumblue damselalgae blenny