McCosker's Flasher Wrasse
(Paracheilinus mccoskeri)
Previous  Up  Next 

  • Click here to view larger image
  • Stats

    Maximum Length: 3"
    Care Level: Easy
    Family: Labridae
    Reef Compatibility: Good
    Minimum Aquarium Size: 50 gal.
    Range: Indian Ocean
    Diet: Carnivore
    Water Conditions: 75-80° F; sg 1.024-1.026 (1.025 is ideal); pH 8.1-8.4
    Ca 420-440 ppm, Alk 8-9.5 dKH, Mg 1260-1350, Nitrates <10ppm, Phosphates, < .10ppm
  • Notes

    The McCosker's Flasher Wrasse will capture your attention as it swims effortlessly throughout the aquarium. It requires an established reef aquarium with plenty of live rock and live sand. The McCosker's Flasher Wrasse feeds primarily on micro inverts living in and around the live rock. Systems with refugiums offer this fish an added source of live food. Keeping one male with several females will cause him to flash his fins and will intensify his color.

    The McCosker's Flasher Wrasse is harmless to ornamental invertebrates, clams, and coral. It is a peaceful fish and should not bother other fish. It is best added as one of the first fish in the aquarium. Do not keep it with aggressive predators or larger aggressive wrasses. 

    Keep a lid on your aquarium because the McCosker's Flasher Wrasse is very likely to try to jump out.


    Water Chemistry:

    Maintaining Ammonia at 0 ppm, Nitrites at 0 ppm, and Nitrates below 10ppm will help to keep your McCosker's Flasher Wrasse happy and healthy. We recommend doing a water change soon after Nitrates rise above 10 ppm. Maintaining proper calcium (420-440 ppm), alkalinity (8-9.5 dkh - run it 7-8 if you are carbon dosing), and magnesium levels (1260-1350 ppm) will help to keep pH stable in the 8.1-8.4 range. We recommend a specific gravity of 1.024-1.026 with 1.025 being ideal for fish. Temperature should remain stable as well and should stay within a 2 degree range.

    Feeding:
    Offer the McCosker's Flasher Wrasse a mixed diet of mysis shrimp and finely chopped meaty foods 4-6 times per week. Soaking all fish food with vitamins will help keep your fish healthier and make them less susceptible to disease. We recommend soaking food in garlic as well when adding new fish and whenever your notice ich or other disease in the aquarium. Garlic will help repel external parasites and will boost the fishes immunity.

    Remember to feed slowly. Leftover food will cause nitrates and phosphates to rise. If you see food falling to the sand bed and into the rocks you should feed slower and give the fish a chance to eat before adding a little more. Using a turkey baster allows you to target food to different fish. For example you can feed the aggressive fish on one side of the tank and then squirt a little bit on the other side for the less aggressive fish. This way all the fish get a chance to eat enough.

  • Item Description Price Quantity
    McCosker's Flasher Wrasse (Paracheilinus mccoskeri)
    Small Female: 1.25" - 2"
    $44.99

    McCosker's Flasher Wrasse (Paracheilinus mccoskeri)
    Small Male: 1.5" - 2"
    $49.99

    McCosker's Flasher Wrasse (Paracheilinus mccoskeri)
    Large Female: 2" - 3"
    $59.99

    McCosker's Flasher Wrasse (Paracheilinus mccoskeri)
    Large Male: 2" - 3"
    $79.99