i don't think the hump on FH head has anything to do with getting the FH angry LOL...
GOOD FOOD/nice strain(bloodline) is the key of having nice golf size humps... i've seen too many FH in asia to know this... and had kept high end FH few years back when i was still in asia... this fish is next to arowanas or even more pappular than arowanas in asia now(LUCK/WEALTH) WISE... i won't go in details but that is/was the trend and why many rich/wealthy families keep them in asia.. fortune etc. etc...
cheers
stephen