written by Dave Burr
Behavior: The red and white juvenile often called the Red Coris Wrasse morphs into a brilliant adult known as the Yellowtail Coris Wrasse with bright blue speckles and a yellow tail.
Do not attempt to keep this fish unless you have a fine sand substrate in which it can bury itself while it sleeps.
Juveniles can usually be kept in reef aquariums without incident but will pose a threat to snails, crabs, shrimp, and smaller clams as they mature. The Yellowtail Coris Wrasse will not bother corals or anemones. Juveniles are not aggressive and can be kept with a wide variety of smaller fishes. Adults should be housed with other semi-aggressive fishes as they may pick on smaller reef fishes.
Keep a lid on your aquarium because the Yellowtail Coris Wrasse is likely to try to jump out.
Feeding: Offer the Yellowtail Coris Wrasse a mixed diet of mysis shrimp and 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.
Feeding Tips: 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.
Maximum Length: 15"
Care Level: Moderate
Reef Compatibility: Add with caution
Minimum Aquarium Size: 120 gal.
Range: Hawaii, Fiji, Indo Pacific, Solomon Islands
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
Water Chemistry: Maintaining Ammonia at 0 ppm, Nitrites at 0 ppm, and Nitrates below 10ppm will help to keep your Yellowtail Coris 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.