The spawns are fixed once a spawn position has been determined. If you see some fruit etc, don't pick it up, then come back at a later time it will still be there. TI found a lot. max 444 fruits found on
CND 
minimum 13?
. I'm sure there's a meaning to them and the numbers they drop but haven't figured that out yet. Stones you find the same way but they 'just appear'. No flies like dung or butteflies for fruits.