longhead catshark
... that the longhead catshark is the only known cartilaginous fish that normally has both male and female reproductive systems?
... that the <b id="mwBUw"><a href="./Longhead_catshark" id="mwBU0" rel="mw:WikiLink" title="Longhead catshark">longhead catshark</a></b> is the only known <a class="mw-redirect" href="./Cartilaginous_fish" id="mwBU4" rel="mw:WikiLink" title="Cartilaginous fish">cartilaginous fish</a> that normally has <a href="./Hermaphrodite" id="mwBU8" rel="mw:WikiLink" title="Hermaphrodite">both male and female</a> <a href="./Reproductive_system" id="mwBVA" rel="mw:WikiLink" title="Reproductive system">reproductive systems</a>?