sorry... sadly it happens... when you shop in the future i would suggest researching a little on the fish you want and make sure its comparable w/ what you have.. also when getting guppies, ask for a male or female. learn the difference, as someone said earlier in the post you want 3 females to 1 male. thats assuming you dont mind baby fry, if you dont want be very sure that your getting all the same sex... i was told the opposite ratio and my female was ready to have her fry and lost them due to stress, the males would not leave her alone, chased the poor girl for almost 3 days... i was super sad.. my little girl and i were so excited about the babies... good luck ..