Who would have thought that fish embryos could be so hypnotic? Under the microscope, they tumble and turn like marbles, executing the occasional piscine wriggle at camera. These dainty roe are zebrafish, whose unusual transparency is a boon for medical research. Scientists intensely breed the fish and tweak their genes in pursuit of knowledge about disease. Artist Kathleen Rogers wants us to think about this manipulation of life, and certainly generates a meditative atmosphere......