Maybe it got covid and it’s the virus ?
Better swab it to verify
*i hope everyone understands I’m joking here*
Better swab it to verify
*i hope everyone understands I’m joking here*

?? that's cruelachieved by dipping the tails in extremely cold water to kill the nerves when the fish were very small.
Yup I found that toointeresting that everything I have read about this is associated with cichlids
I hear ya. Since this happened so quickly I understand the opinions that the fish hit something.I’m just saying I didn’t see anything happen. Doesn’t mean it didn’t.
back to normal. The darkened area got shorter and shorter. Now finally gone. The fish never exhibited any abnormal behavior or signs that it hit something.