yes -your fish is clarias batrachus-two feet ! in outdoor pond but not in aqua with good feeding -38cm till 45cm no more, in my aqua two clarias(28cm) live with little coridoras 4cm and nigrofasciatum cihlids 8cm and everythink is OK but you must feed him two times a day.Im feeding fith red worm,chicken meat ,Hikari pellets for cornivarious fish and resoult is- grow up 8inches per 75 days...