I have had em for quite a while, once every couple of years one will go belly up for who knows what reason. I keep em well fed with Hikari food (expensive) and make sure they have clean water,nice plants, 6 hours of pump circulation a day and a heater in the winter to keep the ice off. They reproduced quite regularly in their younger years and I gave them away to some other pond owning folk. Now I guess they're too old to reproduce, so I may have to buy some more feeders. I'd have to set up a spare tank to keep them for a while to antibiotic treat them so they wouldn't introduce anything to my pond denizens.
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