Dive Deeper: Choosing a Saltwater Wrasse
Wrasses (family Labridae) are among the most active, most colourful and most useful fish in the marine hobby. They range from three-inch flasher wrasses that thrive in a 40-gallon reef to Harlequin Tusks that need 180 gallons and a serious lid. Understanding which group you are buying from matters more than any single species name.
The Main Wrasse Groups
Fairy wrasses (Cirrhilabrus). The reef keeper's default. Peaceful, reef safe, brilliantly coloured, and males flash intensified colour during display. Blue Throat, Exquisite, Orangeback, Blueside and Pintail are all in this group. Most need 55 gallons or more and are best kept one male per tank unless the system is large.
Flasher wrasses (Paracheilinus). Smaller and more nano-friendly than fairy wrasses, with the same display behaviour. Carpenter's Flasher is the classic entry point and does well in 40 gallons and up.
Cleaner wrasses (Labroides). The Common Cleaner Wrasse services other fish of parasites. They have a genuine reputation for being difficult in captivity because their natural diet is so specialised — only buy one that is confirmed eating prepared foods, and expect to feed frequently.
Halichoeres and Coris wrasses. The workhorses: Melanurus, Yellow Coris, Green Coris, Bluehead and Timor. Hardy, hungry, and the best pest control in the family. All of them sleep buried in sand, so a soft bed of at least two inches is not optional.
Tusk wrasses (Choerodon). Harlequin Tusks are showpiece fish for large systems. Reef safe with corals, decidedly not safe with shrimp and small crustaceans. Australian-collected and captive-bred specimens are the ones worth paying for.
Reef Safety and Pest Control at a Glance
| Wrasse type | Reef safe | Eats pests | Minimum tank |
|---|
| Flasher wrasse | Yes | Minimal | 40 gal |
| Fairy wrasse | Yes | Minimal | 55 gal |
| Six Line wrasse | Yes | Flatworms, pyramid snails | 30 gal |
| Melanurus wrasse | Yes | Flatworms, bristleworms, snails | 75 gal |
| Yellow / Green Coris | Yes | Bristleworms, pests | 55 gal |
| Leopard wrasse | Yes | Minimal | 75 gal, mature |
| Cleaner wrasse | Yes | Parasites on fish | 75 gal |
| Harlequin Tusk | Coral safe, not invert safe | No | 180 gal |
The Two Rules That Prevent Most Wrasse Losses
Cover the tank. Wrasses are the number one jumper in the hobby. A gap of half an inch around a return line is enough. A mesh lid or a solid top is the cheapest insurance you will ever buy for a fish in this collection.
Give them sand. Halichoeres, Coris and Leopard wrasses dive into the substrate to sleep and when startled. A bare-bottom tank or a thin dusting of sand will kill them, usually within the first week.
Feeding
Wrasses are carnivores with fast metabolisms. Feed a varied, protein-rich diet — frozen mysis, enriched brine, finely chopped seafood and quality pellets — two to three times daily in small portions. Most species will supplement this by grazing pods off the rockwork, which is part of why they are such effective pest controllers. Timid arrivals such as Leopard wrasses may need target feeding for the first week or two.
Ideal Parameter Range
Salinity: 1.023–1.026
Temperature: 74–80 °F
pH: 8.1–8.4
Ammonia / Nitrite: 0 ppm
Nitrate: under 20 ppm
Stability matters more than hitting an exact number. Regular testing and consistent water changes keep wrasses coloured up and eating.
Why Buy Wrasses From Top Shelf Aquatics
Every wrasse is observed, conditioned and confirmed eating before it ships, packed by aquarists who keep these species themselves, and backed by guidance on compatibility and acclimation. If you are unsure whether a species fits your system, ask before you order — we would rather talk you out of a fish than sell you the wrong one.
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