▁by ▁an ▁el ong ate ▁head ▁meas uring ▁twice ▁as ▁long ▁as ▁high , ▁and ▁no ▁teeth ▁on ▁the ▁pal ate ▁or ▁the ▁tongue . ▁The ▁genus ▁includes ▁the ▁largest ▁member ▁of ▁the ▁m orm y rid ▁family , ▁the ▁corn ish ▁jack ▁( M orm y ro ps ▁an gu illo ides ) ▁at ▁up ▁to ▁ ▁in ▁length . ▁ ▁Tax onomy ▁and ▁species ▁ ▁According ▁to ▁Fish Base , ▁there ▁are ▁currently ▁ 2 1 ▁recognized ▁species ▁in ▁this ▁genus . ▁One ▁of ▁these ▁( mark ed ▁with ▁one ▁star * ▁in ▁list ) ▁is ▁often ▁placed ▁in ▁its ▁own ▁genus ▁Ox ym orm yrus ▁instead , ▁and ▁yet ▁another ▁( mark ed ▁with ▁two ▁stars ** ) ▁has ▁occasionally ▁also ▁been ▁placed ▁in ▁that ▁genus . ▁▁ ▁M orm y ro ps ▁an gu illo ides ▁( Lin na eus ▁ 1 7 5 8 ) ▁( C orn ish ▁jack ) ▁ ▁M orm y ro ps ▁at ten u atus ▁Bou len ger ▁ 1 8 9 8 ▁( Up oto ▁m orm y rid ) ▁ ▁M orm y ro ps ▁b ates ian us ▁Bou len ger ▁ 1 9 0 9 ▁( B um ba ▁m orm y rid ) ▁ ▁M orm y ro ps ▁bou len ger i * ▁P elle gr in , ▁ 1 9 0 0 ▁( Al ima ▁River ▁m orm y rid ) ▁ ▁M orm y ro ps ▁bre vice ps ▁Ste ind ach ner ▁