Filament Flasher Wrasse
Paracheilinus filamentosus
| Stock | Variations | Price | Quantity |
|---|
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Saturday 12 PM – 4 PM
Sunday 12 PM – 9 PM
Healthy, stable animals from vetted suppliers — inspected before packing, shipped overnight. Decades of experience built this model so we can deliver premium livestock at 30%+ less than you'd pay elsewhere.
| Care Level | Moderate |
|---|---|
| Temperament | Peaceful |
| Reef Safe | Yes |
| Functional Benefit | Ornamental Only |
| Diet Type | Planktivore |
| Mininum Tank Size | 55 gallons |
| Max Size | 4 inches |
| Temperature | 72–78°F |
| pH Range | 8.1–8.4 |
| Specific Gravity | 1.022–1.025 |
The Filament Flasher Wrasse (Paracheilinus filamentosus) is a reef safe wrasse known for quick “flashing” displays where the male rises into the water column and fans extended fins. Males typically show strong red and orange tones with blue linework, with distinctive filament-like extensions on the dorsal fin.
What You’ll Observe:
- Active mid-water swimming with short bursts of speed between open water and rockwork
- Brief fin-flares and color “flashes,” especially when interacting with other fish
- A consistent routine of settling into cracks and crevices to rest at night
- Fast, precise feeding in the water column once it recognizes your feeding schedule
Provide open swimming room plus plenty of rockwork with narrow gaps for retreat and nighttime resting. Offer small, meaty foods in smaller portions a few times per day to match a planktivore-style feeding pattern. A tight-fitting lid or mesh top helps this wrasse stay active in the upper water column with confidence.
Do Filament Flasher Wrasses sleep in the sand like some other wrasses?
No—flasher wrasses typically sleep by wedging into rock crevices or branching coral structure, so rockwork “sleep spots” matter more than a deep sand bed.
How can I tell a male from a female when shopping?
Males show obvious elongated fin filaments (especially the dorsal fin) and larger fin shapes, while females are more subdued and lack those long extensions.
Why does it “flash” at other fish—courtship or aggression?
In aquariums, flashing can be a display behavior triggered by nearby wrasses (or new additions), and it may happen alongside short chases as the fish establishes social space.
Can I keep multiple flasher wrasses together to see more flashing?
Many hobbyists report more frequent displays when keeping multiple Paracheilinus of different species, while avoiding two males of the same species in typical home setups.
Will a female Filament Flasher Wrasse eventually turn male?
Keepers commonly report females transitioning over time in closed systems, which is why long-term planning matters if you’re trying to keep a “male + females” look.
Shipped with pure oxygen and temperature control so it arrives stress-free and ready to eat.
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