http://forum.aqua-fish.net/ A forum devoted to aquarium fish, plants, techniques and fish keeping as a whole. en http://forum.aqua-fish.net/?topic=baby-guppies-dying-#1 ok, so I had 40 babie guppies in a 10 gallon tank with a soft airstone. I cleaned it every other day with a syphon. now, the guppies tails started to become a single pointed fin. after that they start swimming down, and floating about, but still alive. I now have two left. can anyone tell me what this is so i can save the last two? Amber 2009-03-20