ive grown guava in shade (maybe 2 hrs sun) and they have almost no fruit at all.
Pawpaw !! supposedly does great in shade.
miracle fruit, most annona, most spondis i think.....
loquat, coffee, Caimito and black sapote supposedly do well
(my black sapote grows fine, but too young for fruit)
my loquat in shade %80 of the day just put on lots of flowers.
same amounts as the ones in full sun.
i have a bignay (from small cutting) in a container getting full sun now
but, i think its happier in the shade - in summer at least.
i have a pineapple guava in the shade that wasnt doing to well at first
after i gave it iron and a little magnesium, the leaves in the lower part of the plant
turned very dark green.
The younger foliage that got more sun, stayed a lighter color.
ive noticed the darker green leaves on lots of plants in the shade.
to me, the darker green a leaf is, the more it can convert sun to photosynthisis
and ive noticed plants in ahde normally have darker leaves
so, plants in shade may have a larger demand for iron and magnesium.