Flasher Wrasse Care: Tank Setup, Diet, Tank Mates, Diseases & More

Caring for a Flasher Wrasse can be a rewarding experience, especially when you see their vibrant colors and energetic personalities come to life in your aquarium. These eye-catching fish are known for their beautiful color patterns and dynamic displays, which make them a popular choice for marine hobbyists.

Flasher Wrasses require a tank size of at least 50 gallons, with a temperature range of 72-78°F and a pH range of 8.1-8.4. They are carnivores and need a varied diet of high-quality frozen or live foods such as brine shrimp, mysis shrimp, and krill. They also require a well-lit aquarium with plenty of hiding places and live rock. 

When I first introduced a Flasher Wrasse to my own aquarium, I was captivated by its playful nature and interesting mating behaviors. It quickly became the star of my tank, darting around and flashing its impressive fins. With proper care and attention, you can also maintain a thriving environment for these fascinating fish.

To ensure a healthy and happy Flasher Wrasse, it’s essential to provide them with the right diet, tank setup, and water conditions. Knowing the specific needs of your Flasher Wrasse will make it easier to create an environment that allows them to thrive and display their captivating behaviors.

Flasher Wrasse Fish Care

Species Summary


The Flasher Wrasse is native to the warm waters of the Indo-Pacific region, where they enjoy the vibrant coral reefs.


These fascinating fish usually have a lifespan of 3-5 years in captivity when cared for properly.


Flasher Wrasses are known for their stunning colors and patterns, which include various shades of blues, yellows, and reds, making them a popular addition to reef aquariums.


Mature Flasher Wrasses typically reach a size of 2-3 inches, making them a relatively small reef fish.

Growth Rate

Their growth rate is moderate; they can reach their adult size within a year or so with proper nutrition and care.

Behavior & Temperament

These wrasses are quite peaceful and active, swimming around the tank throughout the day. They usually get along well with other tankmates, which was why I added one to my own reef tank a few years back.

Male Vs Female

Males tend to be more colorful and flashy than females, often displaying their vibrant fins to attract mates. Females are generally smaller and less vibrant in color.

Tank Setup

Tank Size

When I first started keeping Flasher Wrasses, I quickly realized that a minimum tank size of 30 gallons is recommended. This provides them enough space to swim freely and avoid stress.


Flasher Wrasses love moderate lighting, so I make sure their lighting is not too bright or too dim. LED lights work best because they slightly mimic natural sunlight.

Filtration & Aeration

It’s essential to have a good quality filter and proper aeration in the tank.

  • Use a filter capable of processing at least 1.5 times the tank’s water volume per hour
  • Use an air stone or air diffuser to provide additional oxygen for these fish


Maintaining a stable temperature is critical for Flasher Wrasses. I set my tank’s heater between 72-78°F to ensure they are comfortable and healthy.


I prefer using a sand substrate in my fish tank as it not only looks nice, but it’s also gentler on the wrasses as they tend to dig and rest on the substrate.


Adding decorations to the tank enhances the wrasses’ environment. I use:

  • Rocks (for hiding and grazing)
  • PVC pipes (as makeshift caves)


Flasher Wrasses appreciate some live plants in their tank, as they provide shelter and improve water quality. I use plants like Java fern and Anubias, which are hardy and easy to care for.

Water Quality

Water Temperature

Flasher Wrasses thrive in water temperatures between 72-78°F (22-25°C). I remember when I first set up my aquarium, I had to constantly monitor and adjust the heater to achieve the ideal temperature. Consistent temperature is crucial for these fish.

Water pH

Maintaining a stable pH of 8.1-8.4 is important for Flasher Wrasses. I’ve learned that changes in pH can be harmful. Make sure to:

  • Test pH levels regularly
  • Adjust pH if necessary

Water Hardness

These fish prefer a dKH of 8-12, so be sure to:

  • Check water hardness
  • Use buffering agents

Water Changes

Regular water changes (~10% weekly or 25% monthly) help maintain a clean and healthy environment. I’ve noticed that my Flasher Wrasses are more active after a water change. Here’s a simple routine to follow:

  • Turn off equipment
  • Siphon out water
  • Replace with fresh, pre-treated saltwater
  • Restart equipment

Tank Maintenance

When it comes to Flasher Wrasse care, tank maintenance plays a crucial role. Regular water changes, ideally once a week, will ensure a healthier environment for your fish.

I remember when I first started caring for my wrasse, I underestimated the importance of water changes, but I quickly realized my mistake as cleanliness is key to their wellbeing.

It’s essential to maintain stable and ideal water parameters:

  • Temperature: 72-78°F (22-25°C)
  • pH: 8.1-8.4
  • Salinity: 1.020-1.025 specific gravity

Equipment like heaters and protein skimmers will help maintain these parameters.

Moreover, Flasher Wrasse enjoy hiding and perching, so providing an adequate amount of live rock and caves will keep them happy. Be cautious about placing sharp objects in the tank, as they may injure the fish.

Lastly, it’s important to ensure proper water flow. Flasher Wrasse are used to currents in their natural habitat, so try to mimic that environment by using wave-making equipment or pumps.

By keeping up with regular tank maintenance, you’ll give your Flasher Wrasse the best chance for a happy and healthy life.

Tank Mates

Compatible Fish Species

The Flasher Wrasse is a generally peaceful fish, making it a great addition to a community reef aquarium. Some compatible fish species include:

  • Clownfish: They are docile and enjoy similar tank conditions.
  • Firefish: Their shyness complements the wrasse’s active behavior.
  • Chromis: These active swimmers coexist well with the wrasse.

I once had a Flasher Wrasse in a tank with a small group of Chromis, and they got along great!

Incompatible Fish Species

Not all fish species can live harmoniously with the Flasher Wrasse. Here are some incompatible species:

  • Triggerfish: Known to be aggressive, they may target the wrasse.
  • Lionfish: Their predatory nature poses a risk to the wrasse.
  • Dottybacks: They tend to be territorial and might harass the wrasse.

In summary, to ensure the well-being of your Flasher Wrasse, choose its tank mates carefully. Compatible fish will help create a thriving and beautiful reef aquarium environment for all its inhabitants!


What To Feed

As an aquarium hobbyist, I have learned that Flasher Wrasses primarily feed on zooplankton in the wild. Therefore, frozen mysis shrimp, brine shrimp, and copepods should be the main staples of their diet. They will appreciate a variety of other high-quality marine foods like finely chopped seafood (fish, squid, and shrimp).


Flasher Wrasses have fast metabolisms and need to be fed multiple times a day, at least 2-3 times. Distribute their meals evenly throughout the day for optimal results.


  • To provide a more diverse diet and promote overall health, occasionally supplement the Flasher Wrasse’s diet with vitamin-enriched frozen foods or marine pellet food.
  • Flasher Wrasses often compete with other fast-swimming species for food, so make sure the food is distributed widely within the aquarium to give the wrasse a fair chance to eat.
  • Pay attention to how much food you are giving – too much can create water quality issues. Remove any uneaten food after about 2-3 minutes to prevent water contamination.

In my experience, once I established a consistent feeding schedule, the Flasher Wrasse in my tank became more vivid in color and showed an increase in energy levels. Providing this care will certainly help your Flasher Wrasse thrive in the aquarium.

Common Diseases


Ich and Velvet are two common diseases that affect Flasher Wrasse. These parasitic infections can be fatal if not treated promptly.


Look for these signs in a sick Flasher Wrasse:

  • Ich: White spots on the body, akin to grains of salt
  • Velvet: Fine, dust-like film and clamped fins


To treat these diseases:

  1. Quarantine the fish in a separate tank
  2. Increase the water temperature by 2°F
  3. Administer a suitable medication, like copper-based treatments

I once struggled with a severe Ich outbreak in my own aquarium, but following these steps saved my Flasher Wrasse.


To prevent future infections:

  • Maintain good water quality
  • Quarantine new fish before adding them to the main aquarium
  • Feed a balanced diet and avoid overfeeding

Signs Of A Healthy Fish

A healthy Flasher Wrasse will display vibrant colors and an active swimming behavior. They will eagerly explore their environment, swimming among corals and other decorations.

Feeding time is particularly important for assessing their health. A healthy fish will consume a variety of prepared and frozen foods, such as brine shrimp, mysis shrimp, and other meaty marine foods. This appetite will keep them full of energy and prevent malnutrition.

I once had a Flasher Wrasse that seemed uninterested in food for about a week. I tried numerous tips and tricks before realizing that it just preferred a specific brand of food. Once I made the switch, it was back to its happy, active self!

Additionally, it’s crucial to pay attention to their fins and scales. A healthy fish will have intact fins and smooth, unblemished scales. Any signs of damaged fins or fuzzy, discolored patches on their scales may indicate disease or poor water conditions.

Lastly, healthy Flasher Wrasses will interact well with their tank mates – being relatively peaceful but occasionally engaging with other fish in their characteristic flaring and flashing displays. This behavior will signify that they feel safe and comfortable in their environment!

Signs Your Fish Is Sick

One day, I noticed my Flasher Wrasse swimming erratically in its tank, and I knew something was off.

Swimming behavior is a significant clue. A healthy Flasher Wrasse should have a smooth swimming motion. Observe if your fish is struggling to swim or swimming in an unusual pattern.

Color is another factor. Flasher Wrasse are known for their vibrant hues. If their colors appear faded or discolored, it might indicate stress or illness.

Beware of changes in appetite. Flasher Wrasse usually eat voraciously. However, a sudden loss of appetite could mean your fish is not feeling well.

Physical appearance matters too. Look for any unusual features, such as:

  • Swollen areas
  • Bumps or lumps
  • Fin rot
  • Cloudy eyes
  • White spots

It’s essential to spot these signs early to ensure the well-being of your Flasher Wrasse.


Breeding Setup

To breed Flasher Wrasses, you’ll need a separate breeding tank. I remember when I first set up my breeding tank, it was quite an adventure! Make sure to provide plenty of hiding spots, like caves and rock formations.

How To Breed

Flasher Wrasses are known to be egg scatterers. To encourage spawning, maintain a pristine water quality and feed the fish a high-quality diet. It’s important not to disturb the mating pair during the process.


Once the eggs are laid, promptly remove the adult fish to prevent predation. The wrigglers will hatch in 5-7 days.

  • During the first week, feed them with infusoria
  • After that, switch to newly hatched brine shrimp

Make sure to monitor the water parameters closely. Happy breeding!

Product recommendations for Flasher Wrasse:

  1. Tetra Whisper Bio-Bag Cartridge: These filter cartridges can help keep the water clean and clear in your Flasher Wrasse tank.
  2. Seachem Prime: This water conditioner can help remove harmful chemicals from tap water and make it safe for your Flasher Wrasse.
  3. API Aquarium Test Kit: Regular water testing is crucial for maintaining a healthy environment for your Flasher Wrasse, and this test kit can help you monitor the levels of ammonia, nitrite, and nitrate in your tank.
  4. CaribSea Arag-Alive Fiji Pink Sand: This sand substrate is perfect for creating a natural-looking environment for your Flasher Wrasse.
  5. Hikari Marine S Pellets: These pellets are specially formulated for marine fish like Flasher Wrasse and contain high levels of protein and other essential nutrients for healthy growth and vibrant coloration.
  6. Hydor Koralia Nano Aquarium Circulation Pump: This compact and efficient pump can help improve water circulation in your aquarium and provide your Flasher Wrasse with a more natural environment.
  7. Zoo Med Laboratories AquaSun LED Aquarium Hood: This energy-efficient LED hood can provide ample lighting for your Flasher Wrasse tank and help promote healthy plant growth.
  8. Coralife BioCube Protein Skimmer: This protein skimmer can help remove organic waste from the water and keep your Flasher Wrasse tank clean and healthy.
  9. Omega One Freeze-Dried Krill: This tasty treat can provide your Flasher Wrasse with a high-quality source of protein and help promote healthy growth and coloration.


Caring for Flasher Wrasse can be a fulfilling experience. These vibrant fish bring joy to any aquarium. Use a suitable tank size with appropriate lighting, filtration, and substrate.

It’s important to provide hiding places, like caves and crevices, for the fish to feel secure. Remember to keep them in a peaceful community setting.

When it comes to feeding Flasher Wrasse, offer them a varied diet that includes both frozen and live foods. Consistency in feeding can help promote good health and vibrant coloration.

  • Adequate tank size
  • Proper lighting and filtration
  • Hiding spots
  • Balanced diet

I once noticed that one of my Flasher Wrasse had a dull color, but after adjusting the diet with more variety, its bright colors returned.

Being prepared and understanding Flasher Wrasse care guidelines will help you maintain a thriving, happy environment for these fascinating fish. Enjoy their beauty and personality, and remember to always pay attention to their specific needs.


How big of a tank do Flasher Wrasses need?
Flasher Wrasses require at least a 20-gallon tank for a single fish. These active swimmers appreciate space, so the larger the tank, the better.

What should I feed them?
These fish are carnivorous and prefer a mix of live and frozen foods, such as:

  • Brine shrimp
  • Mysis shrimp
  • Chopped seafoods

A varied diet is essential for their overall health.

What are their tankmates?
They do well with other peaceful, reef-safe fish. Suitable tankmates include:

  • Clownfish
  • Gobies
  • Blennies

Avoid aggressive fish or those who might compete for food.

How do I create an ideal habitat?
Flasher Wrasses thrive in coral-rich environments. Providing plenty of live rock, hiding places, and open swimming areas is crucial.

How often should I perform water changes?
Aim to change 10-15% of the tank water every week, which helps maintain water quality and reduce stress on the fish.

I remember when I first got my Flasher Wrasse, I hadn’t set up enough hiding places in the tank. It seemed stressed and always hiding. After adding more live rock and creating more nooks and crannies, the fish became much more active and engaging to watch.

Reference: Wikipedia.


Hi there! My name is Jacob, and I'm the founder of this Pet people blog that talks all about aquarium and fishkeeping. I've been passionate about fish and aquatic life since I was a kid, and I've spent countless hours learning about different species, their habitats, and how to create the perfect environment for them to thrive in.

Leave a Reply

Recent Posts