Actually in some of the states that have a warmer climate they are illegal. They will be 1 year old on the 9th. of this month and so far the only aggression has been when male or female was protecting the eggs.Compared to the adults that were wild caught,these are pretty violent when they eat. Even if it is live minnows,frozen shrimp,talapia whatever, it is devoured before it is in the water for two seconds.Usually there is a little blood at feeding time but they all seem like they know to watch out for someone elses teeth.Chris.