Wtf is this??

[BrittanyA]

While watching my fish today I noticed this bump on my fish. What the heck is it? On the bottom of the fish, just in front of the front fins.

 

[Colin_T]

I need more pictures from different angles.

 

[BrittanyA]

Poor Sansa! I was gone for a few days and came back to her like this! I was shocked at how rapidly she deteriorated. There was only that bump before, otherwise she was fine. She was one of the first fish I got. She died this morning. Any idea what's going on?? I'm so worried for my tank. I also found a strange tetra this morning too.

 

[BrittanyA]

Here's the tetra yesterday and today it's even bigger. Sorry for the fuzzy photos. I out him in a Mason jar and the curved glass isn't good for photos.

 

[BrittanyA]

Tank is 30 gallons test strip says GH 60, KH 40, PH between 6.0 and 6.5, NO2 0, NO3 40. I do a water change every two weeks and it's due tomorrow which is why that last number is higher.

 

[Colin_T]

Can you try taking a short 20 second video of the fish? The footage might be clearer.
Post the footage on YouTube and copy & paste the link here.
Hold your phone horizontal so the video fills the entire screen.

 

[Guppylover3x]

Can you try taking a short 20 second video of the fish? The footage might be clearer.
Post the footage on YouTube and copy & paste the link here.
Hold your phone horizontal so the video fills the entire screen.

I agree with Colin. A video will be more useful.

Best of luck!

 

[FishGuest5123]

Tank is 30 gallons test strip says GH 60, KH 40, PH between 6.0 and 6.5, NO2 0, NO3 40. I do a water change every two weeks and it's due tomorrow which is why that last number is higher.

You really should clean your tank once a week. Vacuum the substrate and do a 70% water change each time. Clean your filter media in tank water every 2 weeks.

 

[BrittanyA]

Aquarium said prolapsed Colin. Possibly a side effect of tapeworms.

 

[BrittanyA]

I've taken all decor out of tank, scrubbed and set outside in the sun. Did a 70% water change and a treatment of PraziPro. I'm going to take out this substrate and replace it with sand once everything is cleared up. The other purple danio seems to be turning white now too. Hopefully this all helps.