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: Seki-Gifu/ Japan
Profile: Petty
Size: 150mm
Steel Type: Stainless Steel
Steel: Mono VG10
Handle: Ho Wood & Buffalo Horn Ferrule Octagonal
Total Length: 283mm
Edge Length: 150mm
Handle to Tip Length: 160mm
Blade Height: 29mm
Thickness: 1.8mm
Handle Length: 121mm
Weight: 59g
Hand Orientation: Right-Handed
Hardness: 60±0.5HRC