This mated pair of Gold Stripe Maroon Clowns - Premnas biaculeatus - came with a tank I purchased last winter, but I knew of the aggressive nature of female Maroon Clowns and put them both in a 10 gallon tank with LR. As a point of reference, that is a Skilter 250 in the background! Ahem... 9 months later, they are still happily entertaining my teenage son daily. Now he wants a bigger tank. What have I done???