This was the first fish I had, and not for a very long time, as I had to give them to a LFS because my tank wasn't cycled. They get to about 6" and have a red throat. Mine were rather shy and always hid behind the only ornament in the tank. From what I've read, they do better when there are lots of hiding places and suitable dither fish.
Although I supposedly had a male/female pair, the larger one (presumably male) beat up the smaller one and I had to separate them with a tank divider. I had them in a 10 gallon, so that was obviously too small for them to properly establish territories. I'd recommend a 30 gallon at least for a pair, larger if you intend on having other fish.
Great post.
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