I have bought a lot of guppies over the years and many have died for so many reason.I used to buy guppies and mix them with my koi and tilapia.Soon the guppies died assumed eaten (no bodies were found) and then the koi were gone also (demm those large tilapia).I change ponds for my tilapia and bought a new set of koi's.Recently I bought 10 guppies,1 female and 9 male and put them in my new medium size aquarium.For some reason the female died 1st and now there are only left 2 male guppies, the rest have died too.1 of the male guppies have start swimming backward and i assume it will die tomorrow.So I was wondering what might be the cause of this before i restock my guppies. Btw im in cyberjaya.its hot here..nice for those gupies i hope.

P/s: each guppies cost rm1.any1 know where else sells cheaper?