Where is the serial number on a Gary fisher Aquila bike?

The serial number on a Gary Fisher Aquila bike is typically located on the underside of the bottom bracket, which is the part of the frame where the pedals are attached. It may also be found on the rear triangle or on the seat tube, depending on the model year. Look for a series of letters and numbers that may be stamped or engraved into the frame. If you have difficulty finding it, consult the owner's manual or contact a local bike shop for assistance.