I have 10 Blue tetras in my planted 66 gallon tank together with Blue Gouramis, Neon tetras and Glowlight tetras. I have never noticed any "hostile behaviour" from them, but i have heard of their reputation as being bad fin nippers. Maybe no one has told mine... 
By the way, my avatar is one of my Blue tetras.
By the way, my avatar is one of my Blue tetras.
