Okay..I am planning to add a new fish to my current tank with 10" BD ray and 10" blue base crossback back arowana..BTW my sting ray is very aggressive and has already killed a 6" Frontosa and 4" flagtail by suffocating them to death..so I am avoiding bottom dwellers..I have ordered 12" indo tiger for the tank so he can't suffocate it..I wanna add a red pike or a snake head..any suggestions?Red Pike also known as Atabapo