What size aquarium ? Yours are a lot more out-going than mine; mine hide in the underbrush; rush out when i feed them and then shoot back into hiding.
They are in a 90 for now, with plans for a 125 and the eventual custom 8’ tank during the next house move. Mine were much more outgoing at first when I took this picture. They do the same as you described and quickly retreat to their caves when I approach. I used different sizes of ABS pipe and created tunnels underneath the substrate for them. There is a three pronged network of tunnels for them to explore. They love it, but reduces how much I see them.