Hi people, I went to the fish store the other day (House of tropicals in MD) and I noticed they had a baby octopus. I asked the staff what kind it was but they where not sure. He said it was a common Atlantic from Florida or Haiti. He also said I only need a 10 gallon tank. Is this true? would I only need a 10 gallon tank for this or does he just want to get money from me?