Hey,
Being skinny fat, is the worst condition you can be in, especially if you are an ectomorph.
Being an Ectomorph is when you are naturally thin and have light bones.
Here is what happened with me, when I tried desperately to gain muscle, but instead gain tons of body fat.

Here are some of the radical changes I made to my lifestyle that allowed me to drastically reduce my belly fat and become LEAN:
I stopped overtraining:I reduced my workout frequency from five to six times per week to just two to three times per week, saving myself around ten hours per week.
Practice intermittent fasting:I’ve gone from eating five or six small meals a day to just two or three meals a day. This again helps me to save more time while optimizing my health. I love the concept of intermittent fasting,and have been following it for past few years now with great results.
#Increase the intake of fat sources—Healthy fats. This will not only allow you to feel full throughout the day, but also make you optimally healthy.
#Apply 80/20 rule to eating: Eating clean has become really difficult. I always say this—its not what you eat, its what comes in the way!
I have not let a single week pass without allowing myself a cheat meal, including heavy buffets and the occasional mug of beer, glass of wine, or dessert. Who said you have leave out your favorite foods in order to build your dream physique?
#Be precise with your macros:We like to think we eating less, but when we actually start counting calories, do we realise how we overeat. Don’t want to count calories? There is another way, which I feel is even more tough than counting and that is mindful eating. Gone are those days, where the entire family used to sit on a table and eat together, say grace and chew more and slowly and really really enjoy the food. Nows, its about putting a movie on netflix or amazon prime and just gulping down food.
Bottomline, plan ahead, count your calories at least in the short term to know how how you are actually consuming.
After following this for many many months, I lost crazy amount of body fat mainly from my abdominal area. Here’s what I looked like after ~7 months or so:

For more information you can check out my program LEAN-The Ultimate Skinny Fat Solution.