Saltwater Fish
Acanthurus sohal
Acanthurus sohal
(Sohal Tang)

Species Description…

Scientific Name: Acanthurus sohal
Common Name: Sohal Tang
Species Group: Surgeonfish
Habitat: Reef Safe with Caution
Care Level: Advanced
Temperament: Aggressive
Diet Type: Herbivore
Role in Aquarium: Showpiece Fish
Max Fish Length: 16 (inches)
Min Aquarium Size: 180 (gallons)
Native Range: Red Sea and western Indian Ocean
Acanthurus Sohal - The Sohal Tang

Acanthurus Sohal (The Sohal Tang)

Overview

  • Native to the Red Sea and Western Indian Ocean, commonly found in coral reef environments.
  • Recognized for its striking blue and white horizontal stripes and vibrant orange highlights near the tail.
  • A highly active species known for its territorial nature and dominant behavior.
  • Popular in marine aquariums due to its bold coloration and algae-grazing habits.

Feeding

  • Herbivorous diet, primarily grazing on marine algae.
  • Requires a diet rich in plant-based foods, including seaweed, spirulina, and high-quality herbivore pellets.
  • Supplementing with fresh vegetables or dried seaweed supports optimal health.
  • Frequent feedings encourage natural grazing behavior and sustain energy levels.

Habitat

  • Commonly found in coral-rich areas, reef slopes, and rocky coastal zones.
  • Prefers stable water conditions with high oxygen levels.
  • Requires an aquarium with open swimming space and rock structures for grazing.
  • Thrives in environments that mimic its natural surroundings with strong water movement.

Fish Care

  • Optimal water temperature: 74-82°F (23-28°C).
  • Ideal pH level: 8.1-8.4, with a specific gravity of 1.020-1.025.
  • Prone to stress-related illnesses such as marine ich; requires pristine water conditions.
  • Best introduced into a mature aquarium with excellent filtration and strong water flow.
  • Providing ample swimming space and hiding areas reduces stress and supports long-term health.

Compatibility

  • Highly aggressive, especially towards other tangs and similarly shaped fish.
  • Compatible with robust, fast-moving species such as wrasses, large angelfish, and triggers.
  • Should not be housed with slow-moving or timid fish that may struggle to compete for food.
  • Best kept as a single tang in most aquariums unless provided with ample space.

Aquarium Behavior

  • Extremely active swimmer, often seen patrolling the tank and grazing on algae.
  • Highly territorial, especially as it matures, and may challenge new tank mates.
  • Requires plenty of space to swim freely and establish its dominance.
  • Providing an environment with live rock and algae supports natural behaviors.