On Sat, 28 Feb 2009 12:49:06 -0500, Wayne.B wrote:

Seen yesterday in the bayou behind Bowman's Beach on Sanibel Island,
length about 15 to 18 inches.

http://img135.imageshack.us/img135/1153/dsc0821.jpg

There were a lot of them.

From the picture, it looks like a mullet.