Cornish jack
... that the Cornish jack, a weakly electric fish, uses electricity to communicate with other members of its group?
... that the  <b id="mwFCw"><a href="./Cornish_jack" id="mwFC0" rel="mw:WikiLink" title="Cornish jack">Cornish jack</a></b>, a <a class="mw-redirect" href="./Weakly_electric_fish" id="mwFC4" rel="mw:WikiLink" title="Weakly electric fish">weakly electric fish</a>, uses electricity to communicate with other members of its group?