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
Waterfall climbing cave fish Waterfall climbing cave fish The waterfall climbing cave fish ("Cryptotora thamicola"), also known as the cave angel fish, is a species of troglobitic hillstream loach endemic to Thailand. It reaches a length of SL. This fish is known for its fins, which can grapple onto terrain, and its ability to climb. This fish is the only known member of its genus. The species has been recorded from eight subterranean sites within a large karst system (Pang Mapha karst formation) in Mae Hong Son Province, Thailand. The species has an extent of occurrence of nearly 200 km, but an area of