I've seen it once here at my LFS. It's very rare it turns out. I bought it for $35.00 for a friend who wanted it (This is before i got my BGK and fell in love with knife fish's). It died a week later. That was about a year and a half ago. I wish i had kept that fish. I'm still waiting for another one to come around. Just curious though, i've been told that this knife fish doesn't grow very large, is this true? How large does this knife fish get?