Help! My fry’s heads are popping!

  • We are currently upgrading MFK. thanks! -neo

CTC

Black Skirt Tetra
MFK Member
Jun 4, 2018
32
20
13
30
Have you tested your water?
Yes
If yes, what is your ammonia?
0
If yes, what is your nitrite?
0.5 treating with prime
If yes, what is your nitrate?
20
If I did not test my water...
  1. ...I recognize that I will likely be asked to do a test, and that water tests are critical for solving freshwater health problems.
Do you do water changes?
Yes
What percentage of water do you change?
41-50%
How frequently do you change your water?
Every week
If I do not change my water...
  1. ...I recognize that I will likely be recommended to do a water change, and water changes are critical for preventing future freshwater health problems.
Today I noticed a couple of my Jack Dempsey fry have a red line down their spine, horns that look like they’re protruding from the head, and even one’s eyes popped out and it died! What is this? The head turns red as well. Help please!!

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Today I noticed a couple of my Jack Dempsey fry have a red line down their spine, horns that look like they’re protruding from the head, and even one’s eyes popped out and it died! What is this? The head turns red as well. Help please!!

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update: the fry was dying so I cut him open, and low and behold there’s a worm in his nervous system. I always thought the worms In my tank were detritus worms!
 
update: the fry was dying so I cut him open, and low and behold there’s a worm in his nervous system. I always thought the worms In my tank were detritus worms!
I know a YouTuber who had the same issue with his goldfish fry and he never figured it out and most of them died
 
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