Systems-pondering approach to detect and evaluate feasibility of likely interventions to lessen antibiotic use in tilapia farming in EgyptPhaya Nak or Phaya N?ga (Thai: ??????; RTGS: phaya nak; lit.?'lord of N?ga', phaya derived from Mon which signify significant nobility) or Nakkharat (Thai: ??????; lit.?'king of N?ga') in Thai beliefs, nagas are