I bought it from a previous owner just recently at 8-9" He said it was labeled and sold to him as Goliath lol and he never doubted until I pointed out to him that it looks more like a VATF but I cannot be sure myself, I just know it is not GATF, but it surely looks more torpedo shape and streamlined body but I also suspected he wasn't fed enough
When looking at it, here's how I evaluated it:
1- Does it have pronounced stripes? If No, H. goliath. If yes, see below,
2- Is it a gold or dusky color? If Yes, H. brevis. If no, see below,
3- Does it have a blue adipose fin and/or a strongly faded stripe above the lateral line? If Yes, H. tanzaniae. If no, see below,
4- Does it have red, orange or yellow color on both lobes of it's tail? If Yes, H. vittatus. If no, see below,
5- Does it have red, orange or yellow color ONLY on the lower lobe of it's tail? If Yes, H. forskahlii. If no, see 4.