Angel Fish Swimming Upside Down And Alive

[Sportsman2600]

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Tank size: 55 USGAL
pH:7.2
ammonia: N/A
nitrite: N/A
nitrate: N/A
kH:N/A
gH: N/A
tank temp: 76 F

Fish Symptoms (include full description including lesion, color, location, fish behavior): Well I noticed that yesterday my Angel fish was having a problem swimming. My Kissing Gourmi kept attacking him while he was having a hard time swimming. So i put him in another tank. While in there i noticed that his fin looks dislocated and pink at the bottom of it and i have no idea what it is. I do know that it is causing him to stay swimming upside down which can't be good for him.

Volume and Frequency of water changes: I do a water change on the tank every week which is about 20 percent water change.

Chemical Additives or Media in your tank: The only things i use is aquarium salt and dechlorinater

Tank inhabitants: I am not sure of all there names. I have two Bala Sharks, a Algea Eater, tiger barb, 5 tetras and a black fin shark (looks like a catfish to me)

Recent additions to your tank (living or decoration): i have added a couple of begginer plants which i have a pic of.

Exposure to chemicals: None

Digital photo (include if possible):

Hopefully there is a way to help him any help will be appreciated.

 

[WILDER]

Swim bladder, and the pink patch looks like an ulcer which are pink or red with dead white skin around it
Bala sharks really need to be in a 90 gal tank.
Plus stats would be good in ammonia,nitrite,nitrate,and ph.
Once swim bladder has progressed hard to cure.

http/www.fishtanksandponds.info/care-mai...swimbladder.htm

 

[black angel]

The red base at the fin is a bacterial disorder and it seems to have progressed out from the swimbladder or gone internal depending on which happened first.
There isnt any cure for this that i can think of.