I came home today to find 3 fish dead. A salt and pepper Cory a panda Cory and a peacock goby. I immediately tested my water and perfect parameters. I have an angelfish in that tank and he could have been the problem. I noticed that when my dwarf gourami died he looked like he was pecked at before he died. I need help because I am about to go on vacation and don’t want to come home to a bunch of dead fish. Thanks.