PLEASE HELP! Bad fungal infection? (Corydoras habrosus)

[andieb]

My fish's face seems to have a really bad injury or fungal infection and I'm not sure how to treat her, any advice would be really appreciated! 

It's a Corydoras habrosus, I've had her for ~6 months I think. I had them on a mix of CaribSea Super Naturals Sunset Gold and Moonlight sand in part of the tank and Fluval Stratum in the back half of the tank. But I had switched the sand to Quickrete play sand maybe 3 months ago, then noticed some of my corys' barbels were waring so about 2 months ago, thinking it was the substrate change, I switched back to straight CaribSea Super Naturals Moonlight. 

I can go to the aquarium store tonight to pick up what ever treatment you guys have had luck with. I live in Canada though so some treatments are not available here so it would be really helpful if you could let me know any medical ingredients that work, so I can look for meds that are available here that have the same medical ingredient. 

I've heard that Aquarium Salt works well but I've also heard that corydoras are sensitive to it. I have Pimafix but I hate that stuff, but if others have had good luck with it with a similar infection, I'll give it another try. I set up a Tupperware tub with sand and some plant cover and a bubbler that I could move the fish into to treat her, if you guys think that's the right thing to do. 

Water Parameters:

• pH: 7.2
• Nitrates: Almost 0 
• Hardness: Hard - Very Hard (150)
• Nitrite: 0
• Ammonia: 0
• KH/Buffer: 80 ppm 
• Water Temperature: 77.5 F

Thank you for any and all help/advice you can offer!! 

 

[Colu]

That looks like mouth rot I would usually recommend treating mouth rot with antibiotic treatment such as Kanaplex and furan2 together as your in Canada your treatment options are limited I would Qarantine and treat with pimafix and melafix together and  and aquarium salt 1 table spoon for 3 gallons as Cory are more sensitive to salt remember to only put the amount of aquarium salt back in that you take out so if you do 3 gallons water change put 1table spoon of salt back 

Edited September 8, 2021 by Colu

[andieb]

Thanks so much @Colu for identifying what it is. 

I quarantined the fish in a large Tupperware with water from the main tank, sand substrate and an extra sponge filter from a cycled tank. 

Unfortunately the fish store was closing so I had to make a decision before I got to read your response, so my apologies for seeming to not take your advice, I definitely would have if I could have. They didn't have much available and nothing with kanamycin. 

I ended up getting methyl blue and  I did a 10 second dip at 50 ppm then returned the fish to the QT. 

If he's still alive tomorrow morning, should I do another dip? 

Thank you for your help @Colu and sorry again for not being able to take your advice, I hate to ask for advice and then not take it. 

[Colu]

I would do another Methylene blue bath tomorrow.then   treat with the meds I recommend and aquarium salt Methylene blue alone won't cure mouth rot with meds available  it's 50/50 at best whether he make a recovery @andieb

Edited September 8, 2021 by Colu

[andieb]

She was just swimming frantically at the surface, and was really uncoordinated, and now she's lying on her side at the bottom and her gills aren't moving anymore so I think maybe it was too late for her 😞 

[Colu]

Sorry to hear that