Okay, here's a breakdown of all the problems you have in your current stock:
-The pacu will eat the pike, the bichir, and possibly the cat as well.
-If the pacu doesn't get to them, the channel cat will after a while
-The pacu will grow until it gets deformed and stunted, unless you do a major size upgrade in the next couple months
-The channel cat will do the same, but at a slower rate
-Ditto for the pleco
-The JD and pike will probably fight incessantly as they mature
-The pacu will hog everything else's food even after it appears to be full, so you will have to intentionally overfeed
-The bioload will be insane once everything is fully grown, and no amount of filtration will be able to cope with it
So, I'd say if you want more fish either rehome the fish you have, or buy multiple tanks ranging from about 75-450 gallons to properly house all of your current fish.
Or just stop trolling
-The pacu will eat the pike, the bichir, and possibly the cat as well.
-If the pacu doesn't get to them, the channel cat will after a while
-The pacu will grow until it gets deformed and stunted, unless you do a major size upgrade in the next couple months
-The channel cat will do the same, but at a slower rate
-Ditto for the pleco
-The JD and pike will probably fight incessantly as they mature
-The pacu will hog everything else's food even after it appears to be full, so you will have to intentionally overfeed
-The bioload will be insane once everything is fully grown, and no amount of filtration will be able to cope with it
So, I'd say if you want more fish either rehome the fish you have, or buy multiple tanks ranging from about 75-450 gallons to properly house all of your current fish.
Or just stop trolling
