A petty (utility) knife probably gets used most often after your all-purpose knives. It can be used to cut small fruits, vegetables, and even some smaller cuts of meats (any many many more things, like cutting through plastic wrapping from a grocery trip!) If you have one, for a quick meal for two, you may just get it done without a chef's knife. 

Brand: Hitohira 
Producing Area: Saga/ Japan
Profile: Petty
Size: 150mm
Steel Type: Carbon Steel
Steel: Yasuki Blue (Aogami) #1, Soft Iron Clad
Handle: Walnut & Pakka Ferrule Octagonal
Total Length: 276mm
Edge Length: 153mm
Handle to Tip Length: 160mm
Blade Height: 29mm
Thickness: 2.6mm
Handle Length: 114mm
Weight: 77g
Hand Orientation: Ambidextrous