My fish has a problem!?

Question

A couple days ago I noticed my fish had a red and white bump on his head. Today he has a red line going down his back to his tail. Does he have a disease? What should I do? And can it kill him?

Answer 1

your fish got so much stress try change freshwater with rocksalt plus methylene blue and good aeration.  It will kill him if you leave it unattended

Answer 2

i know it sounds silly, but take him to the vet. There could be a possible disease so i think that would be a good option. What kind of fish is it?

Answer 3

you should get a book about fish and look all through it cause i have never had a fish that had that or you could go to a vet.

Answer 4

That sounds like septicemia. The bump sounds like head swelling, ryukins get it a lot (what kind of fish is he?). It could be infected from hole-in-the-head. It probably will not kill him if you caught it early. But yes, streaks through his body sound a lot like septicemia.

Also, if your fishe's tail is getting sucked into the filter, red lines will appear on it from strain.

Medicines that will help treat:

Maracide

Maracyn Two

My fish has gone through this many times, don't worry!!

Contact me if you have any more problems or add more details.

Rab