When we first started our 55 US gal. tank, we had 2 pictus. One died shortly after we got it but the other one stuck around for a while. One evening we brought home 6 new neons for our tank and all was well when we went to bed. The next morning they were missing! Les took out the filter sponge looking for them and something fell out. Quick as a flash the pictus had it in his mouth with nothing but the tail sticking out. We figured it would be ok as we had no other fish that small in our tank..........little did we know.
We had an irridescent shark which had all of its tail eaten off down to seeing his vertabrae sticking out and now I am just sure it was thanks to the pictus! Poor little shark was so pitiful trying to swim around like that. He was a courageous fish!
Anway, a few weeks later, one of our green barbs started acting a little strange and seemed to be suffering from some invisible disease. We kept watching it all evening. I took a bubble bath and when I came out Les asked me where the barb was. It had disappeared. Then the pictus swam by with a large lump in the shape of the barb!! The next day he went right back to the lfs, no credit but it was still cheaper than losing every fish in our tank!
Unless you are prepared to put only larger fish in there (and their mouths open up really big), I don't recommend them for a community tank. We never would have guessed it could swallow one of our barbs whole as it was only about 4 to 5 inches long and our barbs are quite large.
If you get one all I can say is GOOD LUCK! lol