Quote:
Originally Posted by Circa89
I have a legitimate theory on what happened.
It is ant season and just in the past two-three weeks the new colonies are emerging and infiltrating new structures. I wonder if the on-staff caretaker did any spraying for ants recently? If so there is commonly used pesticides that are approved for use indoors, in such facilities as barns and pet kennels. What a general practioner may not know is that water absorbs the chemical and has a high level acute toxicity to fish. If they were experiencing a high level of ant activity and a pesticide like cyfluthrin was used this is very likely the cause of the deaths.
You can tell I watch a lot of House and CSI to come up with a theory like this!
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I can hear what you are saying but they have aquariums in five or six other buildings and no other reported fish deaths. If anything I would think the Hippo aquarium would have those dead fish floating in it too if there was pesticides because the hippos go roll around in crap and grass and then swim and crap all over in the same water as the fish. Then the fish eat the hippo crap that's probably made up of tons of grass and other crap. It's actually quite the crapfest in there.