A fact from Poecilia chica appeared on Wikipedia's Main Page in the Did you know column on 13 September 2023 (check views). The text of the entry was as follows:
Did you know... that dwarf mollies hit rock bottom when they grow up?
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... that dwarf mollies hit rock bottom when they grow up? Source: Miller (1975): "A shaded habitat with flowing water about 0.3 to 0.6 m deep over rocky-gravelly bottom seems to be the preferred habitat of adults; the young occur in quiet, shallow areas in or near beds of vegetation."