Why did he die after having him 6 months

[JeffJ]

i keep humidity at like 50%, i fed him live mice and have him housed in a 20 gallon tank with my female albino with infrared heat lamp and i got him from http://thetyedyediguana.com

well first idea is the female dominated him, that couldn't have helped his situation. also if he was sick your albino is probably sick now as well.

a IR light is not usually a sufficient source of heat. how do you measure your temperatures and humidity? some ways are not accurate.

when is the last time he ate? and did you notice the female "cuddling" with him? this is not a good sign.