{"id":8941,"date":"2026-02-17T07:14:17","date_gmt":"2026-02-17T07:14:17","guid":{"rendered":"https:\/\/aquadistribution.co.uk\/product\/mccoskers-flasher-wrasse-paracheilinus-mccoskeri\/"},"modified":"2026-02-17T07:14:17","modified_gmt":"2026-02-17T07:14:17","slug":"mccoskers-flasher-wrasse-paracheilinus-mccoskeri","status":"publish","type":"product","link":"https:\/\/aquadistribution.co.uk\/?product=mccoskers-flasher-wrasse-paracheilinus-mccoskeri","title":{"rendered":"McCosker’s Flasher Wrasse Paracheilinus Mccoskeri"},"content":{"rendered":"

McCosker\u2019s Flasher Wrasse (Paracheilinus mccoskeri<\/em>)<\/strong><\/h3>\n

Overview<\/strong><\/h4>\n

The McCosker\u2019s Flasher Wrasse is a dazzling, energetic reef fish known for its brilliant orange and blue coloration and dramatic fin displays during courtship. Small, peaceful, and full of personality, this species adds vibrant movement and color to any community or reef aquarium.<\/p>\n

Origin<\/strong><\/h4>\n

Native to the Indian Ocean and Western Pacific, Paracheilinus mccoskeri<\/em> inhabits coral reefs and outer reef slopes, often forming small groups where males \u201cflash\u201d their fins to attract females.<\/p>\n

Feeding<\/strong><\/h4>\n

An active carnivore that thrives on a varied diet of frozen mysis, brine shrimp, finely chopped seafood, and high-quality marine pellets. Feed 2\u20133 times daily for best color and vitality.<\/p>\n

Tank Mates<\/strong><\/h4>\n

Peaceful and reef-safe, it coexists well with other small, non-aggressive fish such as gobies, anthias, and fairy wrasses. Avoid housing with aggressive or overly boisterous species that may intimidate it.<\/p>\n

Aggression<\/strong><\/h4>\n

Generally peaceful, though males may display flashing behavior toward other wrasses. Best kept singly or as a male-female pair in smaller tanks; groups can be kept in larger systems.<\/p>\n

Experience Level<\/strong><\/h4>\n

Excellent for beginner to intermediate aquarists. Hardy, colorful, and easy to feed, this wrasse thrives in mature aquariums with stable conditions and a secure lid (as they may jump).<\/p>\n

Water Parameters<\/strong><\/h4>\n
    \n
  • \n

    Temperature:<\/strong> 75\u00b0F \u2013 82\u00b0F (24\u00b0C \u2013 28\u00b0C)<\/p>\n<\/li>\n

  • \n

    Salinity:<\/strong> 1.020 \u2013 1.025 SG<\/p>\n<\/li>\n

  • \n

    pH:<\/strong> 8.1 \u2013 8.4<\/p>\n<\/li>\n

  • \n

    Alkalinity:<\/strong> 8 \u2013 12 dKH<\/p>\n<\/li>\n<\/ul>\n

    Colorful, peaceful, and endlessly entertaining, the McCosker\u2019s Flasher Wrasse is a perfect choice for adding vibrant motion and charm to reef or community aquariums.<\/p>\n","protected":false},"excerpt":{"rendered":"

    McCosker\u2019s Flasher Wrasse (Paracheilinus mccoskeri) Overview The McCosker\u2019s Flasher Wrasse is a dazzling, energetic reef fish known for its brilliant orange and blue coloration and dramatic fin displays during courtship. Small, peaceful, and full of personality, this species adds vibrant movement and color to any community or reef aquarium. Origin Native to the Indian Ocean […]<\/p>\n","protected":false},"featured_media":8940,"template":"","meta":[],"product_brand":[],"product_cat":[127],"product_tag":[],"class_list":{"0":"post-8941","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-marine-wrasse","8":"first","9":"instock","10":"taxable","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"group_of_quantity":0,"min_quantity":0,"max_quantity":"","exclude_order_quantity_value_rules":"no","exclude_category_quantity_rules":"no","combine_variations":"no","exclude_global_add_ons":[],"addons":[],"_links":{"self":[{"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=\/wp\/v2\/product\/8941","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=\/wp\/v2\/product"}],"about":[{"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=\/wp\/v2\/media\/8940"}],"wp:attachment":[{"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8941"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_brand&post=8941"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_cat&post=8941"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/aquadistribution.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_tag&post=8941"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}