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What is Yellow Wrasse?

Angie Bates
Angie Bates

A yellow wrasse is a type of marine fish native to tropical waters. Commonly found around the coasts of Australia, the Solomon Islands, and in the Indian Ocean, these fish are also popular in saltwater aquariums. The scientific name for the yellow wrasse is Halichoeres chrysus.

Also called canary wrasses, yellow wrasses are a solid bright yellow. They have one long dorsal fin, or fin on their backs, which stretches from just behind their heads nearly to their tails. On juveniles, there are three evenly spaced black spots ringed in white on this fin. The males retain one spot throughout adulthood. Though they are considered a medium-sized wrasse, these fish are usually only about 5 inches (12.7 cm) long.

The yellow wrasse is commonly found in the coasts of Australia and the Solomon Islands.
The yellow wrasse is commonly found in the coasts of Australia and the Solomon Islands.

In the wild, these wrasses are found around coastal reefs, near sandy bottoms with lots of rocks and other rubble. They may be found at depths of 6.5–197 feet (2–60 m), but are most often found at 49 feet (15 m) or below. Bottom feeders, they generally eat snails, shrimp, and other small invertebrates common to reef habitats. They are sometimes, but not always, found in schools.

Not aggressive fish, yellow wrasses are often considered a good choice for saltwater aquariums because they will eat many pest species, such as flatworms and pyramidellid snails. This makes them good protection not only for coral, but clams as well. Additionally, they will often clean parasites from other fish. Although they are found around reefs in the wild, these fish are not always completely safe to have in reef tanks because in addition to eating pest species, they also eat some beneficial species.

Setting up an aquarium for a yellow wrasse requires 2–3 inches (5–7.6 cm) of sand on the bottom of the tank. When the wrasse feels threatened, it will burrow into the sand and hide. This will be its initial behavior for the first few days when introduced to a new tank. In addition to sand, rocks and other shelter areas should be added to the tank. Any aquarium that houses a yellow wrasse should be covered since these fish are good jumpers and will jump out of the tank given the opportunity.

To keep the wrasses healthy, water temperature should be kept between 72–78°F (22.2–25.5°C), and the water's pH should be between 8.1–8.4. A 30–50 gallon (113.5–189 L) tank is the recommended minimum size for these fish. Many experts do not recommend the yellow wrasse for beginning fish owners.

Frequently Asked Questions

What is a Yellow Wrasse?

A Yellow Wrasse, scientifically known as Halichoeres chrysus, is a small, vibrant marine fish commonly found in the Indo-Pacific region. It's known for its bright yellow coloration and is a popular choice for saltwater aquariums due to its striking appearance and beneficial role in controlling pests like pyramidellid snails.

What size tank is suitable for a Yellow Wrasse?

For a Yellow Wrasse, a minimum tank size of 30 gallons is recommended. This provides adequate space for swimming and territory establishment. It's important to ensure the tank has a tight-fitting lid, as wrasses are known to be skilled jumpers and may attempt to leap out of the aquarium.

What does the Yellow Wrasse eat?

The Yellow Wrasse is carnivorous, feeding on a variety of small invertebrates and zooplankton. In captivity, they adapt well to a diet of frozen and prepared foods such as mysis shrimp, brine shrimp, and high-quality marine flake food. They are also beneficial in controlling unwanted pests in the aquarium.

How does the Yellow Wrasse interact with other fish?

Yellow Wrasses are generally peaceful but can become territorial with their own kind or similar-looking fish. They coexist well with most other reef-safe species. It's best to introduce them to the tank last to minimize territorial aggression and to avoid housing them with large, aggressive fish that may bully or eat them.

Can Yellow Wrasses be kept in a reef aquarium?

Yes, Yellow Wrasses are considered reef-safe and can be a great addition to a reef aquarium. They typically do not harm corals or larger invertebrates. However, caution should be exercised with smaller, ornamental crustaceans and worms, as the wrasse may prey on these.

How long do Yellow Wrasses live?

In the wild, the lifespan of Yellow Wrasses can vary, but in a well-maintained aquarium, they can live up to 5 years or more. Providing a stable environment with good water quality, a proper diet, and compatible tank mates is crucial for their longevity and overall health.

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    • The yellow wrasse is commonly found in the coasts of Australia and the Solomon Islands.
      By: lesniewski
      The yellow wrasse is commonly found in the coasts of Australia and the Solomon Islands.