Yeah I could use a light Lloyd, it's a 40 gallon long (48in), And darn Madness I was afraid of that. It appears that two of them have taken a liking for each other as they can be spotted swimming together at times. Although they can sometimes be found gathering amongst each other. Does anyone know how fast these guys grow? It would be cool if they packed some size, some of tetras are bigger than them. They also can change colors dramatically when startled, I think they do it to camouflage. Here are some pics of the tank, they are camera shy though.