What's so funny? Sometimes tumors to females being egg bound can cause a fish to die. If its a female it doesn't need a male for it to have eggs most fish absorb it and some will just lay without a male. Also their immune system is weaker when carrying eggs that can cause issues. A blockage to swim bladder can be fetal. Not sure why your laughing out loud. I'm just trying to help. Being a vendor you should know a thing or two and contribute rather than laughing.