I have a snyo eupterus (6") two gold dojo (3") in one tank. I recently found a syno angelicus (2") at my lfs (25$) that I am serously debating buying i love synos and it is the crown jewell of the family but tank is only a 55g and the dojos get big and the eupetus will get 8 to 9" before he is done, so not enuff space for 4, 8+" catfish in the tank, breaks my heart.