Tank mates

[Mahulya]

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 am planning to add one more fish like snake heads or pike cichlid.. please suggest me..I am very confused

 

[tlindsey]

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 am planning to add one more fish like snake heads or pike cichlid.. please suggest me..I am very confused

It all depends on the temperament of your Crossback Arowana and aquarium size. I know Silver Arowana are territorial but with proper space may work for multiple Aro's.