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McCosker's Flasher Wrasse
Please Note: Due to variations within species, your item may not look identical to the image provided. Approximate size range may also vary between individual specimen.
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McCosker's Flasher Wrasse (Paracheilinus mccoskeri)
Additional locales and sizes may be available!

Quick Stats

Care Level Easy
Temperament Peaceful
Color Form Blue, Orange, Red, Yellow
Diet Carnivore
Reef Compatible Yes
Water Conditions sg 1.020-1.025, 72-78° F, dKH 8-12, pH 8.1-8.4
Max. Size 3"
Origin Africa, Maldives, Sumatra
Family Labridae
Minimum Tank Size 55 gallons
Compatibility View Chart
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The McCosker's Flasher Wrasse is an attractive reef-safe wrasse sure to be the star of your aquarium. This hardy wrasse species adapts well to established home aquariums, making it a beautiful and active addition. The vibrantly colored male McCosker's Flasher Wrasse is predominantly red/orange with blue, horizontal stripes that complement its yellow stomach. The orange dorsal fin is accented with red, yellow, and blue and features a single elongated ray. A gorgeous, red band across the orange anal fin creates an impressive and bold color palette. The female coloration and overall appearance is more subdued. The females also do not feature the large dorsal and anal fins.

The McCosker's Flasher Wrasse requires a 55 gallon aquarium (or larger) with a tight-fitting lid since it is a jumper. Often found along reef slopes and rubble zones, the McCosker's Flasher Wrasse will often swim near the bottom and tends to form small groups where a male swims back and forth between groups of females. The colors of an adult male intensifies during courtship and he may flare or "flash" his fins to attract females. We recommend only one male per aquarium display.

The McCosker's Flasher Wrasse diet should include vitamin enriched frozen mysis shrimp, vitamin enriched frozen brine shrimp, and other meaty foods along with a high quality marine flake and marine pellet food.<

Approximate Purchase Size: Small: 1" to 1-3/4" Medium: 1-3/4" to 2-1/2" Large: 2-1/2" to 3"

Customer Testimonials

Linda K Melbourne , FL
I love this little guy! I have had mine for roughly five months and he is doing well. I have noticed he is a bit of a picky and voracious eater though. The little thing decimated the population of my mysis shrimp that I had breeding in my 95G tank and I now have to feed him frozen mysis 2 times per day or his tummy drastically caves. I also feed him a varied diet of mixed preparations. He doesn't seem to care for anything like the mysis. I don't think these are quite as easy to keep as some previously speculated. Thank goodness I didn't get the females to go with him before learning exactly what their care entailed.
Sean H Loveland , CO
I purchased this fish online and he is great. He has acclimated very quickly in my tank and has a ton of personlity. Every night after he eats, he spreads his fins and dashes back and forth in front of the glass. Don't pass this one up, he is a great addition to any reef tank.
David G Fremont , CA
My fish instantly became the star of my tank. As for being a picky eater, my wrasse eats everything I put in the tank. In the write up they say he swims towards the bottom of the tank, my wrasse swims in the water column. He is an absolutely beauty! I would recommend this fish for anybody with a peaceful tank.
Aaron N Lincoln , NE
I ordered my McCosker's from the WYSIWYG section and he looks exactly like the picture. Wonderful addition to the tank. Mine is not shy, however, he is passive and was bullied around a bit at first. If you are looking to purchase a McCosker's, I highly recommend making it an early addition rather than a later to avoid problems. I feed mysis three times a week and supplement flake and pellets throughout the week and he loves them all. I would buy another if I could.
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