Heckell's thread-finned acara
... that Heckell's thread-finned acara is a South American freshwater fish that has turned up in Singapore?
... that <b id="mwBRg"><a class="mw-redirect" href="./Acarichthys_heckelii" id="mwBRk" rel="mw:WikiLink" title="Acarichthys heckelii">Heckell's thread-finned acara</a></b> is a South American freshwater fish that has turned up in Singapore?