ok just wonderin but what is the largest cichlid and what is its attitude/simple care requirements? if ya got pix please post em. i was told it is the oscar
yeah that video is a pair of emperor cichlids, boulengerochromis microlepis. The video is from Jewels of the Rift which is an awesome video about Lake Tanganyika.
As for which is the largest, it depends on if you're going by weight or length. Either way the answer is generally agreed upon to be either Boulengerochromis microlepis or Cichla temensis. I believe the emperor grows slightly longer but the Cichla is much bulkier but I could have that backwards.