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Acanthurus sohal. The Sohal Tang is hardy, but susceptible to a disease known as Lateral Line erosion, or Hole in the Head. A vegetarian diet high in vitamins, especially beta-carotene can aid in the prevention of development of the disease. Stray voltages are also thought to contribute to this disease and the grounding probe may be beneficial. Sohal Tangs are very aggressive. They should not be kept with other Tangs or Wrasse species. They tend to be well-behaved with old tank mates, but try to kill any new additions. They are only suited for large aquariums with other aggressive fish. They do fairly well in very large reef systems with no other Tangs, and plenty of swimming room. Although Tangs will eat meaty foods along with the other fish in the aquarium, it is important that they are offered plenty of marine based seaweed and algae. This will strengthen their immune system, reduce aggression and improve their overall health. Offer dried seaweed tied to a rock or use a veggie clip, and feed at least 3 times per week. Sea Veggies, Seaweed Salad and Ocean Nutrition are all ideal products and are very easy to use. The Sohal Tangs are among the most prized fish for the aquarium hobby. The blue outline on the fins and the horizontal body striping render them quite striking. Because of its aggression factor and size, this fish should only be kept by an experienced aquarist with a large reef tank.