i have just this minute found another dead female guppy on a plant in my tank she hadnt got any strange marking, she didnt look ill she was just fine, but i have just came to realize what could be the problem. I put my guppy fry in my tank around christmas time when you couldnt tell what sex they were because they were too young and i'v just counted them and i have 11 males and 13 females!! (i'm worried now i'm sure i didnt have that many ) i could move some of the boys into my other 4ft tank, but i'm worried that i have some kinda disease of some sort in my tank with the 11 males and 13 females in so i'm worried if i move some of the males the desease will spead to my 4ft tank I would treat the desease (there might not even be one but i think there might be) because i dont know what desease it is....i cant check the parametres because i havent got a test kit and my mum ses i dont need one So what can i do??