Have you heard any snapping sounds from inside your tank ? You might have a badass pistol shrimp. My good buddy (Whatigot) purchased 50 lbs of cuban live rock from king eds and he counts 11 pistol shrimp that hitched into his tank. They arnt like the tiger pistols you can buy either they are big and very aggressive. This may explain the damage/Brusing to the tail of your fish he swam by the wrong hole.
SWIM BY SHOOTING!!!
check this Pistol video- http://www.youtube.com/watch?v=eKPrGxB1Kzc
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Last edited by TheRealBigAL; 07-10-2008 at 07:49 AM.
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