PLEASE HELP: Fish seems sick not sure why.

Joshua Agostoni · Mar 21, 2018

Ok guys i know this isn't a fresh water forum but i know everyone on here is very experienced and probably has cared for this fish before.. I have a green spotted puffer fish who is still in fresh water because he is so small. Tonight i added in some new fresh water to dilute and refill his tank from evaporation. Every two weeks i do a 50% water change. he is the only fish in the 10 gallon tank i have him in. Tonight after i did that and put in his half shell clam i came over to look for him and noticed him curled up on the bottom of the tank and some of his white belly was black. I have no idea what this could be from does anyone know why they change to the color black and what would cause this to happen. ive done the same steps before and never had a problem. he also seemed to be breathing heavily.

Reefer Deez · Mar 21, 2018

I don’t know much about puffers but this link might help

https://www.thepufferforum.com/forum/viewtopic.php?t=20738

What are your parameters?

Joshua Agostoni · Mar 21, 2018

honestly i dont know i never have had to check his tank really. I always just do my 50 percent water change every two weeks and add fresh water every other week. i know his temp is 78F and my ammonia badge is reading zero
if the nutrients in his tank were two high i would have just diluted them when i added in new water.. and when i saw this i over dosed his tank with prime just to make sure if the nutrients where high they would be neutralized.