Black Patch Pencil Wrasse

Pseudojuloides mesostigma

(0 Reviews)

Black Patch Pencil Wrasse

Black Patch Pencil Wrasse

Pseudojuloides mesostigma

(0 Reviews)

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Black Patch Pencil Wrasse Care Facts

Care Level: Moderate
Temperament: Peaceful
Diet: Carnivore
Reef Safe: Yes
Minimum Tank Size: 70 Gallons
Max Size: 5 inches
The Black Patch Pencil Wrasse, Pseudojuloides mesostigma, is a beautifully colored pencil wrasse that has a shimmering body with a large black patch across its back. The Black Patch Pencil Wrasses is rare in the aquarium trade and makes a great centerpiece fish. They should not be kept with members of its own species. The Black Patch Pencil Wrasse should be kept in a tank with plenty of rockwork allowing it to explore and hide while also a tank with a tightly secured lid as they will try to escape. They will take an omnivorous diet. Overall, the Black Patch Pencil Wrasse is a unique wrasse species that will be an awesome addition to your tank. 

The Black Patch Pencil Wrasse, scientifically known as Pseudojuloides mesostigma, is a striking species highly sought by saltwater aquarium enthusiasts. Native to the tropical waters of the Indo-Pacific region, this vibrant fish boasts distinct coloration and unique behavioral traits, making it a captivating addition to any saltwater marine aquarium.

Habitat of the Black Patch Pencil Wrasse

Found in shallow reef environments, the Black Patch Pencil Wrasse prefers areas with ample hiding spots among coral formations and rocky outcrops. It inhabits depths ranging from 15 to 50 meters, thriving in warm, tropical waters with marine life.

Reef Compatibility of the Black Patch Pencil Wrasse

Considered reef safe, this species poses minimal risk to coral and invertebrate species within a well-established marine aquarium.

Size and Lifespan of the Black Patch Pencil Wrasse

As juveniles, Black Patch Pencil Wrasses typically measure around 2 inches in length, reaching sizes of up to 5 inches as adults. With proper care, they can live for several years in captivity.

Diet in Captivity of the Black Patch Pencil Wrasse

Black Patch Pencil Wrasses primarily feed on small invertebrates and zooplankton in the wild. When kept in captivity, they readily accept a varied diet consisting of high-quality flake food, frozen mysis shrimp, brine shrimp, and occasionally live foods such as copepods.

Aquaculture and Availability of the Black Patch Pencil Wrasse

While Black Patch Pencil Wrasses are not extensively aquacultured, they are occasionally available to hobbyists through reputable suppliers like

Compatibility of the Black Patch Pencil Wrasse

Known for their peaceful disposition, Black Patch Pencil Wrasses generally coexist well with a variety of tank mates. Here is a list of 5 Tankmates that can go with them.

Sexual Dimorphism of the Black Patch Pencil Wrasse

Male Black Patch Pencil Wrasses exhibit more vibrant coloration, including electric blue and yellow markings, whereas females tend to have more subdued colors.

Juvenile to Adult Coloration Changes of the Black Patch Pencil Wrasse

Juvenile Black Patch Pencil Wrasses sports a vibrant yellow body with black patches resembling an eye spot near the caudal fin. As they mature, males develop intricate blue and yellow markings, while females maintain a more uniform coloration.

Temperament of the Black Patch Pencil Wrasse

These wrasses are known for their peaceful nature, making them suitable for community aquariums. However, they may exhibit territorial behavior towards conspecifics or similar-looking species.

Tank Requirements for the Black Patch Pencil Wrasse

  • Minimum Tank Size: A tank with at least 70 gallons capacity is recommended, providing ample hiding places and open swimming areas.
  • Water Conditions: Maintain stable water parameters as follows:
    • pH: 8.1 - 8.4
    • Salinity: 1.023 - 1.025
    • Water Temperature: 75°F - 82°F
    • Water Flow: Moderate to high water flow mimicking natural reef conditions.

Why Choose the Black Patch Pencil Wrasse from

By purchasing the Black Patch Pencil Wrasse from, you can trust that you're acquiring a healthy specimen from reputable suppliers. is committed to providing top-quality marine fish while prioritizing the well-being of aquatic ecosystems through responsible aquaculture and sustainable practices.

In summary, the Black Patch Pencil Wrasse is a captivating species ideal for saltwater marine aquarium enthusiasts seeking a colorful and peaceful addition to their aquatic community. This species will thrive with proper care and suitable tank conditions, bringing beauty and vitality to any marine setup.

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