Zebrafish their larval stages. In 2011, the British Heart Foundation ran an advertising campaign publicising its intention to study the applicability of this ability to humans, stating that it aimed to raise £50 million in research funding. Zebrafish have also been found to regenerate photoreceptor cells and retinal neurons following injury, which has been shown to be mediated by the dedifferentiation and proliferation of Müller glia. Researchers frequently amputate the dorsal and ventral tail fins and analyze their regrowth to test for mutations. It has been found that histone demethylation occurs at the site of the amputation, switching the zebrafish's cells
Displacer beast ability, a form of illusion which causes it to appear to be a few feet away from where it actually is. This makes the creature hard to hit, while it attacks with its long tentacles. The displacer beast is the natural enemy of the blink dog. The hide of a displacer beast has many useful magical properties, making it highly sought after by wizards and alchemists. Many thieves use the eyes of a displacer beast as good luck charms, believing that they will protect the bearer from detection. In the game, displacer beasts primarily live in temperate hills or mountains.