Hi everyone! This my first post here, sadly it is about a fish disease :(. The symptoms are flashing, "yawning" (ie gulping water as I understand), and this mysterious growth from a single point on his head. This just started about two days ago with the flashing. I just noticed the growth today. Eating normally, fairly active, have done 25% water changes the past few days, no other inhabitants. I've included pictures of the growth (in the last one it looks like there is a white spot on his left fin, that is not present anymore, maybe something in the water).
Here are my water parameters. Unfortunately I do not have a kit to test my water for hardness and kh/buffer. Is that recommended? :
Nitrates: ~2 ppm
Nitrite: 0 ppm
Ammonia: 0 ppm
Water Temp: 82 F
Thank you everyone in advance!!!