By fisheye do you mean a true 180-degree field of view, or do you just mean extra wide? I seriously doubt you're going to get a fisheye for that. I presume you're talking about the telephoto and wide-angle adapters that attach to the front of the lens. Those have a practical limit of about 1.5x either direction, so you'd get nothing that would go wider than .7 or .8 of your minimum zoom setting. Just a little wider than built in.
Those adapters do weird things, especially at extreme ends of your exposure settings, like cutting off the corners, or blurring outside the center.
Just trying to set expectations. I don't know if such adapters are even available for that camera.