My flowerhorn jumped out of its tank 2 months ago when it was still in its fry stage at about .75 inch. He was later moved into a 55 gallon tank with larger unaggressive tank mates. He was out for a good 15 minutes but somehow survived, he swims and eats normally now. But I was wondering if...
Where are the sores located? If they are near the head/mouth/gills its most likely the prestage of mouth fungus. Buy some powdered broad range medicine, it'll fix it up. Just continue to monitor that platy because it can spread.
I only keep freshwater fish so I go with the tropical environment. Amazon sword plants, other tall plants, sand substrate with some rocks and driftwood.