She killed 18 fish without stunning them. The former lecturer was sentenced.

The District Court in Kraków found veterinarian Hanna L. guilty of animal cruelty for killing fish without prior stunning during educational activities. She received a six-month prison sentence suspended for two years, a fine of 5,000 PLN, and a five-year ban on teaching related to animal use. The case was highlighted by the Viva! Foundation, which reported the incident after releasing footage of the practices at the University of Agriculture in Kraków. Hanna L. defended her actions, claiming she acted in good faith based on expert advice, asserting that her method was humane. The university conducted a disciplinary investigation but found no wrongdoing.