Emperor 400 filter, heater, 3 air pumps, and 2 65watt lights. I made a lot of caves and hiding spots.
Always try to balance out your tank
Tinfoil barbs, parrots, Oscar, gouramis, clownloaches, kuliiloaches, yoyoloaches, rainbow shark, balashark. German ram, pictuscatfish, peacock, giraffe ciclid
I always had fish tanks. I also have a pond with red ear sliders and other fish.
When you see signs of stress in your fish, you can then take steps to identify the source of that stress and then to resolve it before it becomes a major issue.
If you're looking for a unique way to stock your new tank, give freshwater shrimp a try.
If your fish is suffering, you may want to consider euthanasia as an option to humanely end his pain.