What's the longest time a fish has hid on you for?

[fishoholic]

On July 18th I added a geometric pygmy hawkfish to my reef tank. After 2 weeks of not seeing it (at all) I feared the worse. However on Sept. 15 I saw him, it was just for about a minute, but he looked in good health I couldn't believe that almost 2 months went by before I saw any sign of him in my tank. Well he must be getting braver because I saw him today, he was still sort of hiding in the rock but I could see him clearly and he stayed there for awhile, and he looks great

Not the best pic's but you get the idea
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Just wondering what other peoples experiences were.