Fisher, 30, only moved to Mount Pleasant in the close season following the end of his deal at Hull KR.
However, the Dragons have given him another shot at Super League, as coach Trent Robinson looks to plug the gaps left in his squad by an outbreak of injuries.
Youngster Elio Pelissier, who featured regularly at hooker for the Dragons last season, is out with a broken jaw, while Frederic Vaccari picked up a cruciate ligament injury in the friendly against London last week and is expected to be sidelined for several months.
“I value Ben’s ethic as a player and as a person and know he will settle quickly in to our system.
“A big thanks to Batley, where John and Paul were understanding and very helpful in the process.”