Bala Shark acting strange

TavishMcApril 11, 2013

I have a 55 gallon tank with a large bala shark in it. The fish is approximately 5 years old. Today I noticed the shark gulping air, rather loudly, at the top of the tank. I have never observed this behavior before. Is this normal? There are several other fish in the tank as well and they all seem to be acting normally.

Thanks!

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