Adults are about 1/8 inch in length and the color varies between tan, brownish, or brownish-black. The eyes are normally bright red.
Fruit flies are drawn to fresh fruit and vegetables or where there is plenty of moisture and yeast. They quickly develop in over-ripe fruit, various foods, dirty mops, vegetable bins, floor drains or bottoms of trash cans if their is fermenting liquids.
It breeds and feeds in ripened fruits and vegetables as well as moist decaying organic matter.
Adult females lay an average of 500 eggs near the surface of fermenting fruits and vegetables. The eggs hatch in approximately 30 hours. The cycle from egg to adult is complete in as little as 8 days.