My mate has 15 1 month old guppies and I noticed today that one of them has a deformed tail. It swims really well and is quite healthy. The tail is really long but it doesn't have any shape, its just a whip kind of thing. whip tailed guppies would be quite cool. If it survives I'm going to help breed some more. look out for whip tailed guppies in the near future and you will know who they came from!!! Does anyone else have anything like this?