Just bought a pair two days back just 1 inch big, the fish guy sold me these by saying that these are the MEANEST and most intelligent fish I could ever find, I am not a cichlids person but I was flawed with the growth rate and the fish hardiness when he told that they grow to a size of 12 inch or more.
Have placed the pair with a few rock and a sand cave because I read they need place to hide.
Figuring out what to feed them apart from normal fish pellets, but yeah seriously they surprise me by their intelligence.