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
Psychedelic frogfish frogfishes. As a member of the order Lophiiformes, it has no scales. The skin covers the dorsal and ventral fins of the fish, which aid in camouflaging the fish. The skin may be covered in protective mucus. The psychedelic frogfish is different from many other anglerfishes in that it has a tiny luring appendage on its forehead. It has a relatively flat face with a mouth smaller than that of most anglerfishes. The coloring of the skin is a pattern of yellowish brown or peach colored stripes. This pattern covers the entire fish, including its fins, except for the hidden