rope fish with Black Ghost Knife, pike, and silver dollars

Question
I'm setting up a 60 gallon tank. I already have a Black Ghost Knife for it in my discus tank(I know not a good idea). I want to put a younge pike(not sure what species suggestions?)3 silver dollars and a rope fish but will the pike and silver dollar kill the rope fish or the Black Ghost Knife think it is a knife fish and kill it?

Answer
Hi Abinaov!

Well a Pike's Species Name: Belonesox belizanus if you mean by the Pike Bearer. Silver Dollars are normally not very aggressive and will not attack others but sometimes will fight back if provoked, especially durring it's mating season so it won't harm the Ropefish or Black Ghost Knife either.
On the other hand, the Pike is a highly aggressive fish and one of its main foods are smaller fish. So if the other fish are larger, than you have nothing to worry about so far. Since the PIke is still young, it's threat level is still low. But as it gets older you need to remove it to another tank to prevent it from killing or injuring other fish.

Hope this helps!!! :D
~Sam