Sorry as to what type of environment...all trigger fish native to reefs in the wild. However, putting a trigger into a "reef tank" is not advisable under anny circumstance because they eat anything. However, I keep my trigger ina tank with ALOT of life rock because that is like their home environment. So get some LR and a huge tank, and he will be happy. Of course, you really can't throw anything else in there so just remember you have the meanest trigger ever in you tank....