This does not quite look like the BG-GSF hybrids I have: 1) as Bruce noted, the lower fins have too much yellow (pectral (?) fins almost all yellow). My HBG have just a fringe of yellow at the bottom edge of the lower fins. 2) The head lacks the blue-green striations that I think make HBG look prettier than either parent. 3) I think the body is a little too short top to bottom for a HBG. So I would pick GSF over F1 HBG if those were the only two choices. But, it could be an intergrade closer to GSF than BG.