Half Black Mimic Tang

Acanthurus Chronixis

(1 Reviews)

Half Black Mimic Tang
The half black mimic tang is popular for its stunning appearance, vibrant colors, and ease of care, making it a favorite among aquarium owners.

Half Black Mimic Tang

Acanthurus Chronixis

(1 Reviews)

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Half Black Mimic Tang Care Facts

Care Level: Easy
Temperament: Peaceful
Diet: Omnivore
Reef Safe: Yes
Minimum Tank Size: 120 gallons
Max Size: 10 inches

Half Black Mimic Tang

The Half Black Mimic Tang (Acanthurus chronixis), also known as the Orangeshoulder Surgeonfish, is prized for its striking appearance and peaceful demeanor in saltwater aquariums. Originating from the Indo-Pacific region, they thrive in reef environments with ample hiding spots among live rock formations. Reef-safe and herbivorous, they reach sizes of 8-10 inches and can live for 5-7 years with proper care. Their diet should include marine flakes, pellets, and algae to maintain health and vibrant coloration. While primarily wild-caught, sourcing from reputable suppliers like Saltwaterfish.com is recommended. Compatible with various fish and invertebrates, they require a tank size of at least 120 gallons with stable water parameters. Maintaining stable water conditions with a pH level between 8.1 and 8.4, a salinity level of 1.020-1.025, and a consistent temperature range of 74-82°F (23-28°C) is crucial. Choosing tank mates wisely, such as Firefish Goby, Coral Beauty Angelfish, Lawnmower Blenny, Royal Gramma, and Yellowtail Damselfish, ensures a harmonious community. By selecting Saltwaterfish.com, you ensure the acquisition of a well-acclimated specimen, enhancing the beauty and vitality of your marine aquarium.


Half Black Mimic Tangs are commonly found in from Indo-Pacific's clear waters, favoring reef environments abundant in live rock and coral, which provide vital hiding spots.

Reef Compatibility:

Generally reef safe, Half Black Mimic Tangs help control algae growth, but require a well-established reef tank with hiding spots.

Size and Lifespan:

Half Black Mimic Tangs are known to reach 8-10 inches (24 cm) and can live 5-7 years with proper care, offering long-term enjoyment.

Diet in Captivity:

Half Black Mimic Tangs thrive with a diet that incldues marine flake or pellet food, seaweed, spirulina flakes, and occasional live algae.

Aquaculture and Availability:

Half Black Mimic Tangs are still commonly sourced from the wild as aquaculture is not yet readily available.. Sourcing from reputable suppliers like Saltwaterfish.com is recommended.

Compatibility with Other Fish and Invertebrates:

Generally peaceful, they coexist well with various species but need ample space and hiding spots to minimize conflicts.

Sexual Dimorphism:

No significant differences between males and females in physical characteristics or coloration.

Juvenile to Adult Coloration Changes:

Juveniles display a striking half-black, half-white body, with the white becoming cream or yellowish as they mature, while the black remains prominent.


Peaceful, rarely aggressive towards tank mates, suitable for community tanks with adequate space and hiding spots.

Tank Requirements:

A minimum 120-gallon tank, stable water conditions (pH 8.1-8.4, salinity 1.020-1.025, temperature 74-82°F), adequate water flow, and regular maintenance are essential.

Common Names and Suitable Tank Mates:

Also known as Orange Shoulder Surgeonfish and Mimic Lemonpeel Tang, the Half Black Mimic Tang can live in a tank with:

This thing is an algea MONSTER. Put it in my tank and started eating and hadn't stopped since

Reviewed by: Devin Hayek on Oct. 22, 2023

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