cichlid tank, coralife 50/50 t5 lighting, a lot of rock work, and whisper 60 filtration
it gets better as you go, and please don't overcrowd your tank your fish will be a lot happier and your tank will be a lot cleaner.
3 electric yellows, 1 demasoni, 1 orange blossom peacock, 2 other assorted peacocks, 1 electric blue johanni, 2 frontosa's, 2 knight goby's, 1 silver tip shark(colombian shark), 1 rainbow shark, 1 fire eel, 1 plecostamus
All fake plants
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.