I don't have a fish ID article today, so instead I offer a link to Dive Photo Guide.
Dive Photo Guide is a pretty nifty site about underwater photography. This includes articles on photography techniques. They have monthly photo contests and a section listing underwater equipment options.
It has stuff for the non-photographer. In particular, check out the Galleries section for some great underwater photography; it can be inspiration for those of you who do take pictures.
Have a great weekend and I'll see you on Monday!