04-27-2011, 12:07 PM
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I did have one in a 10g heavily-planted tank. It arrived by accident, in the bag with the pygmy corys and was very tiny at the time, so I just left him in the 10g. He certainly ate snails, I could never see any after a few days with him. He seemed to be doing fine, but I needed the tank to raise the Farlowella fry and didn't want to leave the puffer as he was growing and they can be nippy, so I put him in another tank. He sadly didn't last long. A couple weeks after his departure from the 10g, the Malaysian snails began appearing; obviously he ate what he saw, and a few in the substrate kept the snail population alive.
I believe they are aggressive with each other, males anyway, so they need space and lots of hiding spots like bogwood and thick plants.