Saltwater Fish

Flasher Wrasse

Paracheilinus spp.

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

Flasher Wrasse at a glance
Adult size: 3 inches · Min tank/pond: 55 gallons · Difficulty: intermediate · Diet: carnivore · Lifespan: 5-7 years.

Flasher Wrasse (Paracheilinus spp.) is a popular saltwater fish in the aquarium and pond hobby. Suitable for keepers with 6-12 months of stable-tank experience.

Where Flasher Wrasse comes from

Flasher Wrasse (Paracheilinus spp.) 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 Flasher Wrasse is increasingly available and is the more sustainable choice when you can find it.

Flasher Wrasse tank size and setup

Flasher Wrasse requires a minimum of 55 gallons for healthy adults. The minimum is based on 3 inches adult size and territorial range. For Flasher Wrasse, plan a mature reef tank with stable parameters, sand bed, live rock for cover, and reef LED if photosynthetic.

Water parameters for Flasher Wrasse

Flasher Wrasse 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 Flasher Wrasse eats

Flasher Wrasse 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.

Flasher Wrasse tankmates and compatibility

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

Flasher Wrasse adult size and lifespan

Flasher Wrasse reaches 3 inches at adulthood with a captive lifespan of 5-7 years with proper care.

Can you breed Flasher Wrasse?

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

Common Flasher Wrasse diseases and problems

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

Where to buy Flasher Wrasse online

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

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

Red Scooter BlennyRhomboid Fairy WrasseWarty FrogfishRastas ZoanthidWolf EelPolka Dot Hermit CrabPhimochirus operculatus

Sources and references

Flasher Wrasse care recommendations cross-checked against the following authoritative references and our internal vendor + breeder database.

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Deep-dive Q&A on Flasher Wrasse

Answers to the questions experienced keepers ask after the basic care guide.

How long does Flasher Wrasse take to acclimate to a new tank?

Drip acclimation over 60 to 90 minutes is the safest approach for Flasher Wrasse. Match temperature first (15 minute float), then drip 2 to 3 drops per second from the display sump until the bag volume has tripled. Test salinity (or freshwater hardness) at the end - if it is within 0.001 SG (or 2 dGH) of the display, transfer the specimen with a net rather than pouring shipping water in.

What is the best filtration setup for Flasher Wrasse?

Aim for biological + mechanical + chemical staging. Canister or sump-driven filtration sized for 5x to 8x display turnover per hour, mechanical floss replaced weekly, and carbon or GAC swapped every 4 to 6 weeks. Flasher Wrasse responds well to stable nitrate (under 20 ppm) more than to any specific filter brand - stability beats peak performance.

Does Flasher Wrasse need a protein skimmer?

For saltwater specimens, yes - a properly-sized skimmer rated for 1.5x to 2x display volume keeps dissolved organics low and reduces nuisance-algae triggers. Freshwater specimens do not need skimmers; a well-stocked plant grow-out + canister with chemical media achieves the same end. Flasher Wrasse kept without adequate organic export tends to show stress within 90 days.

Can Flasher Wrasse be kept in a planted tank?

Compatibility with planted tanks depends on the species behavior + water chemistry overlap. Plant-safe specimens leave foliage alone; some pick at soft-tissue plants like vallisneria or anubias. Check the species page profile + the planted-tank compatibility note before stocking Flasher Wrasse in a high-tech CO2-injected setup with valuable cultivars.

What is the ideal lighting for Flasher Wrasse?

For freshwater specimens with no plant requirements, a basic LED at 30 to 50 PAR at substrate is sufficient and reduces algae. For saltwater + reef specimens, target 100 to 250 PAR depending on photo-tolerance, with a sunrise/sunset ramp + a 8 to 10 hour photoperiod. Flasher Wrasse tolerates a wider lighting band than most keepers expect; consistency matters more than peak intensity.

Does Flasher Wrasse prefer high or low water flow?

Most aquarium species evolved in moderate flow with localized turbulence rather than uniform high flow. Aim for 20x to 40x display turnover for reef specimens, 4x to 6x for community freshwater. Flasher Wrasse shows stress fins (clamped, frayed) when flow is mismatched - dial back if you see this within 14 days of introduction.

What temperature shift will stress Flasher Wrasse?

Sustained drift above +/- 2 F from target is the threshold most keepers miss. Flasher Wrasse tolerates day-night swings of 1 to 2 F without issue but a 4 F shift over 2 hours triggers ich + bacterial bloom risk. Use a controller-driven heater (not the built-in dial) and a backup thermometer at the opposite end of the tank.

What are the top 3 diseases that hit Flasher Wrasse the most?

For freshwater fish: ich, columnaris, and fin rot are the top three; quarantine + UV sterilizer prevents the majority. For marine fish: ich (Cryptocaryon), velvet (Amyloodinium), and bacterial infections; tank-transfer method or copper QT during the 30-day acclimation cycle prevents nearly all outbreaks. For inverts + corals: tissue necrosis, parasitic isopods, and protozoan blooms.

Can Flasher Wrasse be bred in captivity?

Captive breeding success varies enormously by species - some breed readily in community tanks (livebearers, cherry shrimp, clownfish) while others have never been captive-bred (most reef fish + most marine inverts). Check the species-specific care guide for the breeding-method note + larval-rearing protocol. Flasher Wrasse kept in pairs or small groups often spawns even without intent if conditions are right.

What are the best tankmates to avoid for Flasher Wrasse?

Avoid same-species rivals (especially male-male pairings for territorial species), known fin-nippers (tiger barbs, certain pufferfish), and anything that out-competes for food or out-grows the tank. Flasher Wrasse also struggles with hyper-aggressive cichlids in freshwater and damselfish in saltwater - both will hold territory at the expense of every other tankmate.

Is Flasher Wrasse safe to keep with cleaner shrimp or cleaner wrasses?

Most ornamental specimens accept cleaner shrimp + cleaner gobies; cleaner wrasses (Labroides) often die in captivity and are not recommended. Flasher Wrasse kept with cleaner pairs typically benefits from parasite control + stress reduction, but verify the cleaner does not get eaten by checking the species size + temperament chart.

What is the realistic lifespan of Flasher Wrasse with proper care?

Captive lifespan tracks closely to wild lifespan when water chemistry, diet, and tankmate stress are managed. Most aquarium fish live 5 to 12 years; long-lived species (large cichlids, pufferfish, some tangs) reach 15+ years. Flasher Wrasse kept in a stable, properly-sized system should live within 80% to 100% of the species lifespan ceiling - early death usually traces back to chronic-stress causes (parameters, tankmates, diet) rather than disease.