Officers were called to the La Hacienda Apartments on Kings Canyon Road and Peach Avenue at 11:00 pm.
Investigators believe a family disturbance led to a man in his 50s shooting another man in the stomach.
The victim, who police say is in his 30s, was taken to a Fresno hospital and is expected to recover.
Officers say the suspected shooter was last seen in a white car. A description of the man has not been released.
Investigators have not found the gun used in the attack.