oh, its a jardini.. its better off alone. hahaha! very mean fish IMO. and if you really would like to have a tankmate with it, I suggest you get a bottom dweller.
honestly, dont surprise, your friend will know about fish and surprise can lead to death.
with fish, its never a 100%
a small fish can harass and kill a large aro if aggressive enough.
buy him a voucher
or blindfold the person and take him to the shop and sya SURPRISE!!!!