The pike might end up killing the more timid Keyhole and possibly the Sajica. The Eartheaters will eventually get too big. I'd loose the pike , and go with the Keyhole(maybe a few of them) or a few sajica, and possibly a group of eatheaters but only if your planning an upgrade to a much larger tank.
Satanoperca need a larger tank and realy clean water,...so not an option. Pikes can be aggressive and turn into large fish. Maybe a dwarf pike is an option. Heckeli probably are to temperamented for a small community tank. The archocentrus sajica is probably to temperamented. Whats left,.......A nice group of 5 keyholes and one pair of Crenicichla regani or Crenicichla compressiceps. This sounds like a nice stock for a 50 gallon. As addition the Pleco and maybe 8 coridoras.
i can kinda see how a pike and a keyhole wouldnt mix, but *** read in the "aquarium atlas" that pikes are generally indifferent towards differently shaped fish that arent considered food. keeping a santonoperca or any fish until they begin to reach a size like that and trading them to an LFS is ok right?
The thing is that i wanted to keep a piscivore that wouldnt desroy the tank decor. so i figured a pike is the way to go. are dwarf pikes piscivorous too?
I have made deals in the past with my LFS about growing up cichlids and catfish and trading them in when they get to big or once I have the desired number of pairs. But remeber all deals are weighted in favour of the LFS.
Is the A. heckeli and the sajica to tempramented for the keyholes? What if in stead of just keyholes i had sajicas? So then if i had sajicas and a dwarf pike, they would fare well with a heckeli, right?