I just got 3 beautiful new dumbo guppies today that were quite small and I was absolutely in love with them. I had already become so attached. I got home and acclimated them and they hung out at the top together and didn't interact with my other 3 guppies or any other fish. I had to leave a little after to go out so I didn't get to watch them and see if everything was okay. Of course it wasn't. I asked my grandma to keep an eye on them just to make sure nothing happened but I was sure nothing would. She texted me saying that my gourami was annoying them and going for them but I thought that if she used a net to keep her away the guppies may be fine. She also said that they were digging in the gravel trying to escape. I didn't know what to say as I was distracted and didn't know what to do as I wasn't there. I got home and quickly ran up to look at them and my heart dropped. All three were completely destroyed. One was dead, and the other two were barely hanging on. My family helped me move them to a small bowl and we put a plant in there to give them a little place to hide in. They are still alive but their tails are destroyed. Hardly anything is left and I have a feeling they won't make it much longer. I am younger and this is very difficult for me as I just had a fish death yesterday and a week before too - all different causes. They were stunning and I am devastated. Does anyone know why my Gourami did this, what I can do and how to introduce new guppies without them dying? Please. Any help would be appreciated. I unfortunately don't take fish deaths well and this just broke my heart. I hope your fish are doing well.