To AA between cyan and light blue you can actually use green. Also a good colour to AA between yellow and light red is actually light grey, it is a bit more neutral than the cyan.
Have a look at this unless you have not seen it already.

I see you also used grey next to light blue to AA it to the light red, this also does not really work (same reason as the cyan and light grey, too close in value)
Even tho the light grey and cyan are so close I would use a light grey at the snout where you have the cyan, just to differentiate it a bit from the background.