local snapshot = display.newSnapshot( 200, 200 )
math.randomseed( 0 )
-- Add 4 fish images to the screen
for i = 1,4 do
    -- Create a fish
    local fish = display.newImageRect( "new_icon.png", 40, 40 )
    -- Move it to a random position relative to the snapshot's origin
    fish:translate( math.random( -100, 100 ), math.random( -100, 100 ) )
    -- Insert the fish into the snapshot
    snapshot.group:insert( fish )
end
snapshot:translate( display.contentCenterX, display.contentCenterY )