<prompt> unaweza kugeuza matini haya ya swahilikwa kiingereza?takriban spishi zote zina taya la chini lililorefuka, angalau wakiwa wachanga, ingawa kipengele hiki kinaweza kupotea wakati samaki wanapokomaa, kwa mfano katika jenasi chriodorus.  <response>: most species have an extended lower jaw, at least as juveniles, though this feature may be lost as the fish mature, as with chriodorus, for example. 