Yep, I'm going with the weakfish on this one, too.
Easy things to look for in fish ID are overall body shape, mouth and eye placement, and, if you want to get technical, number of spines on their fins (this comes in handy when using a fish ID program like the one at
www.fishbase.org). Colors aren't so telling once things have been partially digested, because certain substances/body parts get digested more quickly and color can be changed by stomach acids.