fin damage need some help

[kYle223]

ok so back on boxing day i bought this african butterfly fish and it seems very healthy and active but when i bought it it was kept in a tank with angel fish lots of angel fish :nono: :screwy:so i noticed when i got home and put him in my tank he had quite a bit of fin damage but hees healthy active and quite an agresive eater so i figured it wuld heel up in a bit

just yesterday i look in the tank and notice the damage has goten alot worse:jaw-dropping: to the point where on his left "wing" it loks like he has fingers theres just no tisue in between them

so im almost as stumped as his belly fin as to what culd be doing this to him and what i can do about it

ile guive a list of the kinds of fish i have in the tank but the only fish that has ever harmed another is my gourami with teritory isues to other gouramis also i am going to quarentine the fish and put some fin damage stuff in what stuff shuld i use?

alright the fish i have in the tank are
1 af butterfly
5 white/black skirt tetras
3 bloodfin tetras
5 cory cats
1 platinum gourami
1 pim cat
1 raphael cat
2 kuhli loaches
1 bn pleco
i want someone to guess what fish i shuld keep an eye on because i have never seen any of my fish nip before exept my gourami vs a now dead pearl gourami

 

[FastFly67]

Please go ahead and give us all the info on the tank. size, params, temp. etc
also a picture would be quite helpful

 

[kYle223]

46 gal
80 degrees all the time due to hot room temp
planted with hygro somethingoranother
good tap water havent checked ph yet

i reeeeeeeeeealy wanted to get a picture of his fins but no camera sory
all of the fish i have 1 of are 1 1/2" - 2" exept the gourami at 3"
actually i have been survaling my fish for the past hour and its my gourami thats nipping for some reason
i still have some questions though

q1 what do i heal the af butterfly with

q2 im gona sell my gourami ive never needed to transport a fish like that before how do i get him back to the store? i dident save the bag he came in ?

q3 help me pick a replacement for him
based on what i have in the tank
i want to try a cichlid this time
im probably gona get a red parot, rainbow or keyhole cichlid
but if you have any recomendations NOOOOO ANGELFISH theyr not cichlid-y enouph for me

ps the blood fins are going too