I've only been raising HBG for a little over a year now, so I'm certainly no expert, but I'll weigh in on mike's photos.
Numbers 1 and 4 appear to me to be HBG, no question. Number 2 looks like a mature, male BG. It has the vertical bars, the black tipped 'shoulder scales", a pronounced opercular flap, and a distinct black spot near the end of it's dorsal fin. The only concern I have with it's identification is that it seems to have a rather large mouth. Hmmm... Number 3 seems to give me the most trouble..., the markings say HBG, but it seems to be more "slender", like a GSF. Nah, I'm gonna go with HBG on this one too.....
