McCosker's Flasher Wrasse: Male - South Asia

Paracheilinus mccoskeri


(12 Reviews)

McCosker's Flasher Wrasse: Male - South Asia

McCosker's Flasher Wrasse: Male - South Asia

Paracheilinus mccoskeri


(12 Reviews)

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Care Facts

Care Level: Moderate
Temperament: Peaceful
Diet: Carnivore
Reef Safe: Yes
Minimum Tank Size: 30 Gallons
Max Size: 3 inches
McCosker's Flasher Wrasse, Paracheilinus mccoskeri, is an excellent reef safe wrasse species that will be a hit in most home aquariums. It features a beautiful apple-red body with horizontal blue striping and flaring dorsal and caudal finnage. 
McCosker's Wrasse is best kept in a tank with a tightly sealed lid to prevent escapes and should be well stocked with live rock and have a sandy substrate.It is advised to keep only one McCosker's Flasher Wrasse per tank to curb against territorial aggression. 


Unveiling the Splendor of the Male McCosker's Flasher Wrasse: A Stunning Addition to Your Marine Aquarium

Embark on a captivating journey into the enchanting world of saltwater marine aquariums with the Male McCosker's Flasher Wrasse (Paracheilinus mccoskeri). Delve into this comprehensive description as we unravel the intricacies of this magnificent marine inhabitant. From its natural habitat, reef compatibility, size, lifespan, dietary preferences in captivity, aquaculture availability, compatibility with tank companions, unique sexual dimorphism, temperament, precise tank prerequisites including the minimum tank size, meticulous water conditions encompassing pH, salinity, and water temperature, alternative common names, a curated list of compatible tank associates, and the compelling rationale behind acquiring the Male McCosker's Flasher Wrasse from Saltwaterfish.com, this elucidation presents an immersive understanding of the captivating attributes of this species.

Native Habitat and Striking Appearance of the Male McCosker's Flasher Wrasse

Endemic to the warm waters of the Western Pacific, the Male McCosker's Flasher Wrasse dazzles with its iridescent colors and alluring fin displays, evoking the essence of marine elegance.

Reef Compatibility and Aquatic Behavior of the Male McCosker's Flasher Wrasse

This species showcases a commendable reef-safe behavior, coexisting harmoniously with your coral formations while adding vivacity to your marine oasis through its mesmerizing courtship displays.

Size and Lifespan of the Male McCosker's Flasher Wrasse

With a size that typically ranges between 2-3 inches, the Male McCosker's Flasher Wrasse introduces a captivating visual element to your aquarium and graces it with its vibrant presence for several years.

Dietary Preferences in Captivity for the Male McCosker's Flasher Wrasse

The Male McCosker's Flasher Wrasse thrives on a varied diet comprising high-quality frozen and live foods, ensuring its health and vitality.

Compatibility with Tank Companions for the Male McCosker's Flasher Wrasse

Exhibiting a relatively peaceful demeanor, this species harmonizes with many tank companions, provided they share similar temperamental traits. But only one per tank, as they will show territory aggression.

Sexual Dimorphism and Tank Requirements for the Male McCosker's Flasher Wrasse

The Male McCosker's Flasher Wrasse is renowned for its captivating courtship displays, showcasing its vibrant fin extensions. A tank size of at least 30 gallons is recommended to cater to its natural behaviors.

Minimum Aquarium Size and Optimal Water Parameters for the Male McCosker's Flasher Wrasse

Ensure a flourishing habitat by adhering to water parameters within the pH 8.1-8.4 range, salinity 1.023-1.025, and a consistent temperature between 75-82°F.

Alternate Common Names and Compatible Tank Mates for the Male McCosker's Flasher Wrasse

McCosker's Flasher Wrasse: Reflecting its mesmerizing visual displays.
Flasher Wrasse: Highlighting its dynamic courtship rituals.

Five Compatible Tank Companions:

  • Anthias: Infusing vibrant colors and fostering a captivating display.
  • Firefish: Adding dynamic movement and diversity to your tank.
  • Blennies: Coexisting harmoniously due to shared temperamental traits.
  • Cardinalfish: Enhancing the visual depth of your aquarium.
  • Dartfish: Contributing to a well-rounded and captivating aquatic ensemble.

Why Choose Saltwaterfish.com for the Male McCosker's Flasher Wrasse

Procuring the Male McCosker's Flasher Wrasse from Saltwaterfish.com signifies your commitment to ethical marine stewardship. Our dedication to responsible sourcing, comprehensive quarantine procedures, and expert care ensures you receive a resilient and splendid addition to your marine sanctuary. With an extensive range of marine inhabitants and expert guidance, Saltwaterfish.com stands as your ultimate destination for cultivating a vibrant and thriving aquatic habitat.

In conclusion, the Male McCosker's Flasher Wrasse (Paracheilinus mccoskeri) embodies marine elegance and charisma. Its vibrant colors, captivating courtship displays, and compatibility with a diverse range of tank companions make it a treasured addition. Opt for the Male McCosker's Flasher Wrasse from Saltwaterfish.com and embark on a journey where the splendor of the marine world becomes an integral part of your aquatic masterpiece.


Reviewed by: Peter Moran on Feb. 9, 2024


Reviewed by: Joseph Fortini on Dec. 26, 2023


Reviewed by: Andrew Hernandez on Dec. 14, 2023


Reviewed by: Andrew Hernandez on Dec. 13, 2023


Reviewed by: Bob Lentner on Dec. 10, 2023

Really nice fish.is doing fantastic


Reviewed by: Joshua Hoke on Nov. 22, 2023

Great active fish. Arrived healthy and Right after acclimation it made itself at home in the aquarium and started eating. Definitely not shy!


Reviewed by: Dave Debiase on April 25, 2018

Our wrasse came in looking very weak (shipping was delayed due to the carrier, not saltwaterfish.com), and during drip acclimation the fish laid on it's side for the entire drip duration. Once in the tank, the wrasse made it through the night but passed away the next day. Customer service was very prompt and gave us store credit in which we are very thankful for!


Reviewed by: Forrest Nelson on Oct. 4, 2017

Delivered a little on the smallish side (about 1.75"), but it's been a fantastic fish so far. Added him with an orange spot goby as the first two fish in the tank. Take note that this fish may appear on death's door upon arrival -- pale color, laying at it's side, etc. This is typical behavior, don't panic. Acclimate properly (15-20 minute float to normalize temps, then slow-drip tank water to double the volume ... dump out 1/2 and repeat) and you should be fine as this is a fairly hardy species. Within an hour of introduction into the tank he had found a hole in the rocks to hide in for a while, but within an hour he was already popping out and exploring a little bit. Enticed him to take mysis on night-1. Overall a great fish. Very active, voracious eater, not easily startled. Fantastic color and he's always "flashing" the brilliant fins. Will be one of the more timid fish you can put in your tank so add him early to establish his spot in the tank before other fish join the community -- and then, house only with peaceful tank mates.


Reviewed by: David Schnabel on June 5, 2017

Very Hearty fish. He eats mysis, and Omega one pellets three times a day( very active, feed small amounts.) Very colorful,personality wise, he's very curious.


Reviewed by: Rondy on April 25, 2017

Cool fish, pretty hardy and looks sweet


Reviewed by: Keegan Gibson on Feb. 15, 2016


Reviewed by: Gary on Nov. 7, 2014

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