Hi Klau107 ...sorry for your guppy..first things id ask is whats the ammonia, nitrite, and nitrates in the tank? how big is the tank? whats the temp? once those are all determined we can figure it out..goodluck!

hey there, One of my guppies are always swimming towards the surface. I dont think its oxygen starvation since its the only one doing it. do you knw what it is? I dont see anything on him plz help