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Surgeon Fish and Rabbit Fish
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Saltwater Sugeon Fish also called Saltwater Tangs are marine aquarium favorites. Surgeons get their
names from the sharp barbs they possess. This group of fish are known for their striking colors and
patterns.
Tangs are usually placid community fish, many forming large groups or shoals, although fiercely territorial
against other tangs or similar shaped or coloured fish in an aquarium setting. All tangs and surgeon fish
are characterised by having a forward facing spine (two on some species of surgeon) on each side of the
caudal peduncle (visible as a short, horizontal stripe on the base of the tail in the above picture). This
spine, apart from terminating in a point, has angular edges that result in a scalpel-like sharpness along
its length also. When alarmed, some tangs can erect the spines sideways and slash at their opponent
with rapid sideways movements of the tail. In other tangs, the spines are not retractable and are always in
the offensive position.
Tangs primarly graze on macroalgae, such as calerpa and gracilias, although they have been observed in
an aquarium setting to eat meat-based fish foods. A popular technique for aquarists, is to grow
macroalgae in a sump or refugium.This technique not only is economically benefical, but serves to
promote enhanced water quality through nitrate and nitrite absorption. The growth of the algae can then
be controlled by feeding it to the tang.

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