A handblown glass fish (for irony)
Start small than build up
I started with only two plants and they were bulbs from Walmart!
Neons, glowlite tetras, peacock eels, young plecos, a red fin bruno, Kuhli loaches, hillstream loaches, yoyo loaches, a tiger barb, a skirt tetra, a loach that is yet to be identified, opaline gourami, takasho amano shrimp, mosquito eater, frogs.
Anubias coffeola, aponogeton bulbs, Nymphaea bulbs, micro sword, moss (not java), amozon sword, Ozelot sword, Java fern, hybrid aponogeton bulbs, dwarf lillies, driftwood, and petrified wood.
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.