I added 7 blood fin tetras to my tank, right after they went to my tank first thing I saw was one blood fin going for snail (small pond snail) and it swalloed it. I have been seeing this all morning today. They are going inside plant bushes and eating small snails. I will update how it will go over time. Looks like I accidently discovered way to reduce snail population in my tank. Please add your comments if you have seen similar behavior. If this is true then forget assasin snail 
. I have never seen then eating snail, I have seen snails piggybacking on them
Regards
NN
. I have never seen then eating snail, I have seen snails piggybacking on them Regards
NN