Sushi is the overall name of different types. This specific is called Makizushi (巻き寿司, "rolled sushi") or short "Maki".
Wow. I become smarter everyday. I thought if you put fresh fish on the rice - you get sushi. If you roll some stuff like crab, cucumber, cheese, etc inside rice and wrap it it with Nori - you get rolls
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you can follow into the rabbit hole here https://en.wikipedia.org/wiki/Sushi :)
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