Yup, they ate again, either live feeder or ghost shrimp. Success. They only eat when I turn the blue light on, they feed when it's dark.
I would say 3.5'-4'. There's really big one being fished but no idea whether it's apogon or bleekeri. Fishbase said bleekeri only endemic to mekong river while apogon in southeast peninsular. These guys I ordered in Thailand, probably more towards bleekeri than apogon. Also some source say that apogon are shinier than bleekeri.
I've seen the video, someone fed these guys with tongs. But the video are poor quality so I have no idea what they fed em. Mine are still 9-10", if I ever fed em using my hand, they would run away. Quite shy of a fish.