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
Black spot disease (fish) after leaving the snails they burrow into the skin of fish and form a cyst. The fish surrounds the cyst with black pigment that gives the disease its name. If an infected fish is consumed by a bird, the cycle repeats itself. Black spot disease (fish) Black spot disease is also known as diplopstomiasis or fluke disease. It is a freshwater fish disease caused by flatworm larvae of the genus "Neascus". It appears as tiny black spots on the skin, fins and flesh of the fish. The life cycle of the parasite typically involves a fish-eating bird, a snail and