Local Sushi Restaurant Banned by Ichthyologist Who Won't Stop Correcting the Menu

Ichthyologist Dr. Clara Dorsal has been permanently banned from Sakura Sushi following her seventh visit in which she corrected the menu, questioned the chef's species identification, and attempted to examine a piece of yellowtail under a portable USB microscope she keeps in her purse. 'That was not yellowtail,' Dr. Dorsal said, standing outside the restaurant where a staff member had escorted her to the door. 'Yellowtail is Seriola lalandi. What they served me was almost certainly Seriola quinqueradiata -- Japanese amberjack. Similar? Yes. The same species? Absolutely not.' Restaurant owner Kenji Takahashi confirmed the ban, describing Dr. Dorsal's visits as 'an escalating nightmare.' 'The first time, she asked if our salmon was farmed or wild,' Takahashi said. 'Fine. Normal question. The second time, she asked for the genus and species of every item on the menu. By the fifth time, she was bringing her own fish identification guidebook and cross-referencing our hamachi.' The seventh and final visit culminated when Dr. Dorsal requested permission to take a tissue sample from a piece of sushi for DNA barcoding analysis. When denied, she attempted to do so covertly using tweezers, which a server noticed. 'I was just trying to verify the species,' Dr. Dorsal said. 'Seafood mislabeling is a serious issue. Studies show that up to 30 percent of fish sold in restaurants is incorrectly identified. I'm providing a public service.' 'She's providing a headache,' said Takahashi. Dr. Dorsal has since been banned from two additional restaurants and one fish market. She maintains that her actions are 'in the interest of consumer protection and ichthyological accuracy.' She has begun reviewing sushi restaurants online, using a rating system based on taxonomic precision. Her highest rating so far is two out of five fish, awarded to a restaurant that correctly identified its mackerel as Scomber japonicus. 'They lost a point for calling it Spanish mackerel on the English menu,' she noted.