so I have had a established 20 gal tank for a while now, and today I woke up to find five of my Zebra Danios bloated, I thought it could be pregencany, as they are all golden, and the other Zebra Danio is silver, but I am afraid it is dropsy, as they have a redness near their rear, and the other Zebra Danio is a huge jerk to the others, constantly nipping them. I recently added seven glofish Tetras to the tank(over a week) and I’ve heard they are nippy, but I haven’t seen any of them act aggressive. I’m really scared about my fish, and I’m getting a bad feeling with my tank. I feel like my platys may possibly have some form of ich, because I see white dots in the same location on two of them, and none on any of my other fish. I’m also scared about my kuhli loaches, which I have barely seen since I added them, and I fear they are hidden under the gravel, starving themselves(I have four, and only saw one day, for two seconds before it darted under a rock) My three Rasboras seem fine, but I feel like their school is too small, and they might be stressed. My levels are all normal, I slowly stocked this tank(over the course of a month) and this is a cycled tank. I’m so scared, and I need to get to the bottom of what’s going on.