From memory, but maybe a slight overstatement: http://www.sci-news.com/genetics/article01036.html http://www.sci-news.com/genetics/article01036.html 70 per ce

From memory, but maybe a slight overstatement: http://www.sci-news.com/genetics/article01036.html http://www.sci-news.com/genetics/article01036.html 70 per cent of protein-coding human genes are related to genes found in the zebrafish (Danio rerio), and 84 per cent of genes known to be associated with human disease have a zebrafish counterpart.