That is usually a sign of fruit fly or a fungus problem. Pics help

Here is the photo

Looks like fruit fly have you seen any worms.

No worms; but inside black in a little area and can I trim and throw the branches with fruit and spray something so that the next crop will be better. Indu

I don't know of a spray if it's not fruit flies and it doesn't look like fungus but I do know a lot of people that are in to fruit trees so I will ask around and see if they now what it is.

indumodali, I have a very productive and healthy guava tree and never had those problems but at least twice a year I spray around the fruit trees only organic, one time with all seasons horticultural spray and other time with Orchard Spray from Bonide.

Silvia