A raw sardine is a small, low level fish caught with a fishing rod and bait at Net/Bait fishing spots around Soulsplit. The sardine offers quite low experience per catch, however it is still more experience than catching shrimps.
Although sardines are higher fishing level and better experience, most players catch shrimps and anchovies until around level 20 Fishing.
Sardines require a Fishing level of 5 to catch. After they are caught, they can be cooked at level 1 Cooking to become a sardine.