Hello im new here and need some help. Water Perimeters Nitrate 0 Nitrite 0 Ammonia 0 PH 7 Tank 90 gallon (long ) 1 Oscar 10 Red Jewel Cichlids Planted, driftwood (aquarium safe) Fully cycled 1yr No new fish, plants, decor for 6 months Weekly 40% water changes using prime. Ok so I was given an Oscar via a rescue about 6 months ago just as my breeding pair of Jewel cichlid were having fry. No issues among the two completely different cichlid species. However in 1 month 3 cichlids have become vertical standing and what i see is some sort of fungus on mouth and swollen body. Ive added pics to help. Tank was medicated for an all in one remedy, but no success in curing whatever it is.