I bought 6 (about 3"), 3 died during shipping (overnight Kuala Lumpur-Langkawi). The other surviving 3 are interesting to watch.
They started feeding as soon as I let them into their tank (I cut short the acclimatization process because the fish arrived incredibly thin as in the tummy is paper-thin, so I don't want them to die from starvation) 1 was a wee bit thinner and got bullied by the other 2. I separated the thinner one to another tank, to fatten it up a bit. I
They eat a lot! Getting more tanks and more of them soon.