We are making additions to: Van der Laan, R., W. N. Eschmeyer & R. Fricke 2014 (11 Nov.), Family-group names of Recent fishes. Zootaxa Monograph 3882 (1), 1-230. DOI 10.11646/zootaxa.3882.1.1 Download ...

The games usually feature simple side-scrolling movement, which is why beat 'em ups are known as "belt scrollers" in Japan and some Western gaming circles. "Brawlers" is another term for the genre.