Can a pygmy cham see a prey without the prey moving?
Let's say I have a dark cricket against a clear background or glass. The cricket is still. Can the Pyg identify the cricket even tough it's not moving?
Well, they seem to be programmed to eat only moving objects. At least part of the object needs to be moving, even if it's only the antennae. I don't know if legs count, necessarily, as our chams won't got for a roach that has fallen and is laying on its back with its legs waving wildly.
It seems the chams are wired to go for reasonably healthy prey.
In general, however, it seems to be movement that gets their attention. They would have no reason to recognize a stone-still cricket because it would not get their attention in the first place.