This template'sinitial visibility currently defaults tocollapsed, meaning that it is hidden apart from its title bar.
To change this template's initial visibility, the|state=parameter may be used:
{{Actinopterygian genera|state=expanded}} will show the template expanded, i.e. fully visible.{{Actinopterygian genera|state=autocollapse}} will show the template autocollapsed, i.e. if there is another collapsible item on the page (anavbox, sidebar, ortable with the collapsible attribute), it is hidden apart from its title bar, but if not, it is fully visible.