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: Touroku Sakai Kirameki 
Producing Area: Sakai-Osaka/ Japan
Profile: Petty
Size: 150mm
Steel Type: Stainless Steel
Steel: VG-10, Stainless Damascus Clad
Handle: Burnt Oak Octagonal
Total Length: 279mm
Edge Length: 150mm
Handle to Tip Length: 160mm
Blade Height: 28mm
Thickness: 1.9mm
Handle Length: 120mm
Weight: 80g
Hand Orientation: Ambidextrous