Theodoxus fluviatilis
... that the snail Theodoxus fluviatilis can reach population density up to 6412 snails per m2?
... that the snail <i id="mwBe8"><b id="mwBfA"><a href="./Theodoxus_fluviatilis" id="mwBfE" rel="mw:WikiLink" title="Theodoxus fluviatilis">Theodoxus fluviatilis</a></b></i> <i id="mwBfI">(shells pictured)</i> can reach <a href="./Population_density" id="mwBfM" rel="mw:WikiLink" title="Population density">population density</a> up to 6412 snails per m<sup id="mwBfQ">2</sup>?