Hey all. I was thinking of adding a Venustus & Zebra Obliquiden to my stock list for my 120g all male tank. For those who have these guys, will they be any trouble to add to my following planned stock list? Don't want to add them if they are going to be a lot more aggressive than the fish I've picked out. (tank is 120g, 5ft. Fish will be all males) Thanks! 
Aulonocara Benga Yellow
Aulonacara Flavescent Ussisya
Aulonacara Sp. Lwanda Red Top
Aulonacara Neon Violet Ungi
Aulonacara Sp. Ruby Red
Aulonacara Stuartgranti Ngara
Oto. Litho. Zimbawe Yellow Blaze
Placidochromis Phenochilus
Protomelas Taiwan reef
Pseudotropheus Acei Luwala (2)
Protomelas Sp. Red Empress
Yellow Lab (2)
Rusty

Aulonocara Benga Yellow
Aulonacara Flavescent Ussisya
Aulonacara Sp. Lwanda Red Top
Aulonacara Neon Violet Ungi
Aulonacara Sp. Ruby Red
Aulonacara Stuartgranti Ngara
Oto. Litho. Zimbawe Yellow Blaze
Placidochromis Phenochilus
Protomelas Taiwan reef
Pseudotropheus Acei Luwala (2)
Protomelas Sp. Red Empress
Yellow Lab (2)
Rusty