i love the little thing because hes so cute and pretty and ive had him the longest. he killed 3 fish, bit my platty in the eye and terifys the female guppy. he also bite of my catfishs fin to the bone. the skins still there but its like fuzz. i dont know what 2 do. its by brothers fish and he doesnt want 2 get rid of it but it killed MY fish! Not his!!! and i need room for another platy. he said no 2 returning it but i cant get naother tank. what am I 2 do. 
How many female guppies are in the tank with him? Are there are other male guppies? I never had that probelm with a male guppy, but when my female guppy is pregnant she has her terrible mood swings. She would start chasing after the other fish, especially my female swordtail. I have no idea why she goes after them! 
. btw you should take out any dead fish because it will polute the water. i think your male needs females
