I have blue tetra's and I would classify them as aggressive. They are a torpedo tetra and have a sharp mouth. They killed two Bloodfin tetras and a glass catfish. I have two them still in with Giant and Moustached Danio's. They can't killsthos haha but they are territorial still.
So a guy walks into a Pet Store
Guy: "I have Algae on my drift wood!"
Pet Clerk: "Take two Plecos and call me next week."
EHEIM Classic 2213
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