My yabby is small, about two inches long. I have had it (haven't checked sex) for about three weeks in a small tank. The tank is well aerated and filtered.

I built a great cave for my yabby with rocks, driftwood and a small. He loves it! Cleared a back entrance through the gravel and spends a lot of time in there. Too much for my liking, just because I want to see him more often.

I am certain he is healthy. He gets a wide variety of food, which is never allowed to spoil.

He comes out more often when I turn out my room light.

He moulted last week. How long does it take them to fully harden after a moulting? Is he hiding lots due to this? Is it just an individual thing?