Peacock Flasher Wrasse (Cirrhilabrus Temmincki) saltwater aquarium fish

Overview:

The Peacock Flasher Wrasse (Paracheilinus carpenteri) is a small, colorful reef fish best suited to mature marine aquariums with plenty of swimming space and peaceful surroundings. Despite its delicate appearance, it is active, hardy once settled, and highly rewarding to keep. Ideal conditions include a tightly covered tank of at least 55 gallons, stable salinity, strong oxygenation, and excellent water quality. Provide a natural reef setting with live rock for shelter, but leave open areas for display swimming and flashing behavior. This species does best in well-established systems with low nitrate, minimal aggression, and gentle to moderate water flow. Sand beds are not essential for this wrasse, but hiding places and secure crevices are important so it can retreat when stressed.

Diet and Feeding:

Peacock Flasher Wrasses are carnivorous and should be offered a varied, protein-rich diet. In captivity, they thrive on small meaty foods such as frozen mysis shrimp, enriched brine shrimp, finely chopped seafood, quality marine pellets, and flake foods designed for carnivorous reef fish. Feed small portions two to three times daily, since they have fast metabolisms and do better with frequent meals than one large feeding. New specimens may initially be shy eaters, so start with frozen foods that trigger feeding response and gradually train them onto pellets. Soaking food in vitamin supplements and HUFA additives can support long-term color, immune function, and breeding condition. Avoid overfeeding, as this can quickly degrade water quality and stress the fish.

Compatibility:

This species is generally peaceful and works well in reef aquariums with other non-aggressive tankmates. Good companions include clownfish, gobies, blennies, fairy wrasses, chromis, cardinals, and many small tangs. It is usually safe with corals and most invertebrates, making it a strong choice for reef-safe community tanks. However, Peacock Flasher Wrasses can be intimidated by aggressive fish such as large angels, triggers, hawkfish, dottybacks, or dominant wrasses, especially in smaller tanks. Males may display and spar with other flashers or similar-bodied wrasses, so keep only one male unless the aquarium is spacious enough to reduce stress. Provide a peaceful hierarchy and avoid adding overly bold fish after the wrasse has already established itself.

Health and Quarantine:

Like most wrasses, this species should be quarantined before introduction to the display tank to reduce the risk of marine ich, flukes, and internal parasites. A 2–4 week quarantine with observation, prophylactic treatment when appropriate, and consistent feeding helps ensure a smooth transition. Watch closely for rapid breathing, faded coloration, clamped fins, pinched belly, or refusal to eat, as these are early signs of stress or illness. Good nutrition, stable salinity, and low stress are the best preventive tools. Because flashers are jump-prone and easily startled, a secure lid is essential. Maintain pristine water conditions and avoid sudden changes in temperature or salinity, since this species is sensitive to environmental instability.

mysis shrimp brine shrimp high-quality marine flakes/pellets
Peacock Flasher Wrasses are highly active, open-water swimmers that spend much of the day darting through the water column and performing display flashes, so they need a secure, well-structured aquarium with ample open space and some hiding spots among rockwork. They are generally peaceful and non-territorial, though males can be mildly assertive in display, especially toward conspecifics, with aggression usually limited to competitive flashing rather than serious harm. A minimum tank size of 55 gallons is recommended for a single specimen, with larger systems preferred if keeping multiple wrasses or a mixed community. The layout should include visual barriers and scattered rockwork to reduce stress, provide refuge, and break up sight lines without restricting swimming room. They coexist well with most reef-safe tank mates and are best matched with other calm, non-bullying species that will not outcompete them for food or harass them. In feeding, they are carnivorous micro-predators that pick at small crustaceans, zooplankton, and other meaty foods, so they do best on a varied diet of frozen and prepared marine fare offered multiple times daily.

FAQ

Frequently Asked Questions

About the Peacock Flasher Wrasse

  • How can I tell a Peacock Flasher Wrasse male from a female, and do I need more than one in the same tank?
    Males are the ones with the spectacular blue-green body sheen, red/orange accents, and the elongated “flasher” dorsal and caudal fin extensions, especially when displaying. Females and juveniles are much plainer, usually with a more subdued tan, pink, or yellowish tone and no dramatic fin extensions. In captivity, one male with multiple females is possible in a large, peaceful system, but two mature males in a small tank usually leads to constant display and aggression. For most hobbyists, the best setup is either a single male or a male with one or more females in a very peaceful, covered aquarium.
  • My Peacock Flasher Wrasse keeps jumping. What tank setup actually prevents this?
    This species is an excellent jumper and should be treated as a “must have a tight lid” fish, not just a fish that “might” jump. A fully covered tank with no gaps around pipes, wires, or feeding holes is ideal. Even a small opening can be enough for them to escape, especially when startled or at night. A secure mesh lid works well if it allows gas exchange and light penetration. The tank should also have calm, predictable surroundings, because sudden movement, aggressive tankmates, or lights turning on abruptly can trigger jumping.
  • What feeding schedule and diet keep a Peacock Flasher Wrasse healthy and colorful long-term?
    They do best with frequent small meals rather than one large feeding. In the wild they pick at tiny crustaceans and zooplankton, so in captivity they thrive on finely chopped mysis shrimp, enriched brine shrimp, copepods, quality small pellet foods, and frozen plankton-style foods. Feeding once daily is often not enough for best body condition and color; 2 to 3 smaller feedings a day is better if your tank and filtration can handle it. A wrasse that is not eating aggressively soon after introduction is often stressed, newly imported, or not yet accustomed to prepared foods.
  • Can a Peacock Flasher Wrasse be kept with aggressive fish, and what tankmates are safest?
    They are peaceful and easily outcompeted, so they should be kept with non-aggressive tankmates. Good companions include clownfish, gobies, blennies, cardinalfish, peaceful tangs, anthias, and other non-territorial wrasses that won’t bully them. Avoid aggressive dottybacks, large hawkfish, triggerfish, many damsels, and overly assertive wrasses that may prevent them from feeding. The key is not just “reef safe” but “food-safe”—this species needs to get to the food quickly without being harassed.
  • Why does my Peacock Flasher Wrasse lose its bright colors or stop flashing, and what does that usually mean?
    A loss of display behavior usually means stress, not necessarily illness. Common causes include lack of cover, aggressive tankmates, poor diet, insufficient room to swim, or being newly introduced and still settling in. Males flash most when comfortable, especially around other wrasses or during social interaction, and they often become much more active in a peaceful tank with good lighting and plenty of open swimming space. If the fish is also hiding constantly, breathing heavily, or not eating, then the issue is more likely environmental stress or disease rather than normal color fluctuation.