Cory cat has ripped fins.

I have an albino cory cat who's fins are badly torn. There is no aggressive fish attacking him and it isnt fin rot as his fins have been torn for a while. there also isnt any decor that he could get cut on. I have pea gravel. Is that tough on fish fins? I will take pics if that would be helpful.

 

Picture of your tank and the fish pls

 

ok I will try. Lighting isnt the best sometimes.

 

It’s oki. I just neeed to see it

 

Here are some blurry pics of my tank.
1. My dwarf gourami ( he was moving so it is blurry)
2. A pic of the entire tank
3 The cory cat. You can sort of see the ripped fins. ( note he is the only cory in the tank. I had a school but he is the only surviving member)
4 a close up of the tiki decoration, which is the only piece of decor other than plants
the tank size is 10 gallons. The other occupants are a khuli loach and 3 female bettas. ( I thought the khuli loach was dead so I ended up getting more fish, that is why it seems overstocked when he gets bigger I will put him in my 40 gallon bowfront) The same thing happened with the khuli loach that happened to the cory, I had a school and only he survived)

 

His fins are quite short… are you sure it is not any of the betta!

 

Looks like they have been nipped rather than ripped. 3 female bettas and a dwarf gourami in that size tank versus a single cory could end up that way.

 

His fins are quite short… are you sure it is not any of the betta!

Looks like they have been nipped rather than ripped. 3 female bettas and a dwarf gourami in that size tank versus a single cory could end up that way.

I have never seen any of them being aggressive, they mostly just mind their own business. I suppose it is a possibility though.

 

What are the waterparameters?

 

Nitrite- 0ppm
Nitrate-5ppm
Ammonia-0.25ppm
ph-7.6
high range ph 8.0

Random question- What is high range ph in a master test kit. I never understood what that means.