I've got about 8 ghost shrimp split between three 10g tanks, one of which is a ghostie breeding tank. Well, today was the 10th year anniversary at the veterinary clinic where I intern for hours towards my biology degree so I was over there all day. While I was gone, my stepfather decided he was going to use insecticide bombs in the house to kill off the flies and mosquitos that come in when the cats go in and out. My mother covered all 5 of my tanks with towels to prevent the chemicals from getting into the water but she didn't know to turn off the air pumps. I came home and after sitting outside waiting for the house to be safe to enter again, I went downstairs to feed the fish. I was feeding my dwarf puffer and the bettas some bloodworms and my mom came down to watch. She was the one who noticed the shrimp first. In the community tank I set up for her, there was a dead shrimp in the front. I thought it had merely gotten old and passed, but then I noticed my very large shrimp in my community tank, fittingly named Monster, was on her way out as well. As I checked the tanks, all of the shrimp were either very sluggish, dying, or dead. Needless to say half of my shrimp population was wiped out. Luckily the breeding tank was spared as well as all of the mystery snails (which there are about 150 in the same hatchery as the shrimp one). I guess it was a learning experience and luckily I can replace my shrimp fairly cheap.
