No surprise here but iv found possibly the worlds most aggressive tetra , I honestly never heard of these bad boys but they seem like little units , i had a Sunday trip to a local favourite and verbs it was closing time I had chance to talk to our George ( not his name ) just what I call him and he showed me videos of his buck tooth tetra ..... how ... why do these things exist and why have I never had them before .. are they as mental as they seem ? Are they literally a single species fish or ... Yano can I buy 6 ahahaha