The McCosker's Wrasse is a popular saltwater fish that is native to the Indo-Pacific region. This fish has a distinctive appearance with a dark body and a bright orange stripe on its dorsal fin.
 
To keep a McCosker's Wrasse in your aquarium, you'll need to provide a tank size of at least 75 gallons with plenty of live rock for hiding and grazing. This fish is generally peaceful and can be kept with other non-aggressive species, but should not be housed with larger, aggressive fish.
 
Feeding a McCosker's Wrasse is easy, as it is an omnivore that will eat a variety of small foods. You can feed it a mix of frozen or live brine shrimp, mysis shrimp, and other small marine invertebrates.
 
In terms of care, the McCosker's Wrasse is a hardy fish that is relatively easy to care for. However, it is important to maintain stable water conditions and keep an eye on the water quality in the tank. This fish prefers a temperature range of 72-78°F and a pH range of 8.1-8.4.
 
One thing to note about the McCosker's Wrasse is that it can be jumpers, so a tight-fitting lid is necessary to prevent it from jumping out of the tank.