Protein blisters on cory

[Row-Z]

Hello,

I have a peppered cory that has what appears to be protein blisters. I have been told that it is from eating too much protein, which I don't understand because from reading corys need high protein. All other corys in tank are fine.

10 gallon planted tank

Ammonia 0 - Nitrites 0- Nitrates 20 - pH 7.2 (water changes weekly)

1 pair Borelli Opal Apistos

3 Adolphi corys

3 Peppered corys

Alternate feeding: Extreme community flakes, frozen spirulina brine shrimp, frozen mysis, freeze dried tubifex, freeze dried bloodworms, HIkari micro wafers for community tanks, Mini algae wafers. - I feed small amounts 5-6 days a week. Fast at least 1 if not 2 days a week.

I am unable to find much on internet of what to do, and some info conflicting.

 

Any thoughts on treatment, feeding would be appreciated. The fish is swimming, eating and active. It looks terrible and not sure if I should euthanize.

Thank you for your help,

Row-z

 

[Guppysnail]

I’m not personally familiar with protein bubbles. I have read articles involving Gas Bubble Disease. 
 

Here is an article you may find helpful. I hope your fish recovers. https://www.thesprucepets.com/how-to-treat-gas-bubble-disease-in-freshwater-fish-5074238

[Colu]

There a gland just behind the dorsal fin of Cory's that can show protein secretion you can also get gas bubble disease that's what @Guppysnailmentioned and it  looks similar to what your fish looks like that and it can be  caused by supersaturation of oxygen in your tank or though leak of gas in to your water though small holes filter piping I would check your filter to see if you have any leaks in the connections @Row-Z if it is fatty deposits I would feed a lower protein diet for next couple of week to see if there's any improvement 

Edited August 12 by Colu

[Row-Z]

Thank you for the info. I run an aquarium co-op sponge filter, with co-op air pump and a hang on back filter so I don't think it is over-saturated with oxygen. I am pretty sure they are filled with air not fat, a couple have popped and filled back up. I will put him in a quarantine tank and feed less protein to see if that works. He's a busy little guy exploring all around the tank with his buddies. Thanks again.

[Colu]

On 8/12/2023 at 4:20 AM, Row-Z said:

Thank you for the info. I run an aquarium co-op sponge filter, with co-op air pump and a hang on back filter so I don't think it is over-saturated with oxygen. I am pretty sure they are filled with air not fat, a couple have popped and filled back up. I will put him in a quarantine tank and feed less protein to see if that works. He's a busy little guy exploring all around the tank with his buddies. Thanks again.

What I would do is add a so aquarium salt 1 table spoon for 3 gallons  if there filled with air your more than likely dealing with gas bubble disease I would also lower the level of water to reduce pressure or put him in breeder box closer to the surface it can help with gas bubble disease hopefully he will improve 

Edited August 12 by Colu