I have kept two of the swords in the last picture. I have bought 6 but only two made it past two weeks, despite my best efforts. I got them from a good lfs, but they always came from the supplier sick. One lived 3 years before I lost her to a outbreak of velvet
, she was my favorite fish. The other one I got a few months ago and is doing great. The pic you have up is of a young female, they look completely different when they are adults. The fish in the first two pics can breed, but the male lyertails will not be able to. They get very big as previously stated and they are slow eaters. They need a tank with a slow current and from my experience with them they tend to be sensitive fish. All in all, they are my favorite fish, even though I normally can't stand "man-made" fish.cheers,Mikaila31