Actually it is a new tank, I just put them there, I have two JD, but just one it looks like sickBerryAttack said:probably an internal parasite.
treat with methylene blue or any internal parasite med, do it in a hospital tank (before treating do a large water change with treated tap water)
if your water stats aren't good then it wont help, make sure that you have cycled the tank and when treating take out all carbon.
cycle it? I believe I did, but now the question is, what to do with them? Is it better to get them out to my other fishtank or what? I just want them not to die.BerryAttack said:did you cycle it?
if you didn't you need to get on that, and then if you have more of them then treat the whole tank to make sure that all will be good.
and also they are aggressive fish so when they grow you'll most likely have issues, and they are massive.