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: Miki-Hyogo/ Japan
Profile: Petty
Size: 120mm
Steel Type: Carbon Steel
Steel: Yasuki Blue (Aogami) Super, Soft Stainless Clad
Handle: Walnut & Pakka Ferrule Octagonal
Total Length: 258mm
Edge Length: 123mm
Handle to Tip Length: 133mm
Blade Height: 30mm
Thickness: 1.6mm
Handle Length: 125mm
Weight: 68g
Hand Orientation: Ambidextrous