i know this thread is a little old but i have a bleekeri in my 210 and his tankmates are a gold flowerhorn, green terror, ebjd, rtc(soon to be removed), and one red jewel. the bleekeri is beautiful and i had never seen or heard of them until about 4 months ago. i saw him in the dreaded "show only" tank at my lfs. after some haggling with the owner i procured him for 35 dollars. so i've had him in the tank for 4 months now and he gets along great with everyone except the red jewel who ounce for ounce is the most agressive fish i've owned in a while. not mixing africans with central americans is just common no no fish retailers warn you about although i and many others have no problems with it. it's all about your set up and relieving stress in the aquarium. good luck with the bleekeri they are beautiful fish!