I have a 135 with an oscar, green texas, and 2 silverdollars I was thinking about adding a Crenicichla sveni. Do you think this would work? Would another pike work out better than the sveni? The dimensions are 72x18x24
What are the sizes of your other fish and how long have they been in there? How many decorations/hiding spots do you have? Pikes are torpedo shaped, so they are pretty easy to eat when small and kept with bigger fish. So I wouldn't get a pike under 4". It could work. Add it at night when the lights are all off so it can get adjusted and everything without being harassed by the other fish.
the oscar is 9" the green texas is 5" and the silverdollars are about 3" they have all been in the tank for about 3 weeks. I have a big piece of driftwood that has hollowed parts that my parrots used to lay eggs in all the time and there is a hill of gravel that has caves built in it. THanks for the help