This past week my royal gramma has begun acting aggressive towards a couple of his tankmates. He has begun chasing and nipping the tail fin of my Pajama Cardinal and tries to chase my male occelaris clownfish. He is about the same size as these two fish. He won't bother my female clown, who is about an inch larger than him, or the pink spotted watchman goby.
Tank is a 29 gallon BioCube. Clowns and goby have been in the tank for 3 years. I've had the cardinal for about a year and a half. The gramma was added this past October. Everyone has gotten along fine until this past week.
Any suggestions on a cause or possible solution? The only option I can think of is having to remove the gramma if this continues.
Tank is a 29 gallon BioCube. Clowns and goby have been in the tank for 3 years. I've had the cardinal for about a year and a half. The gramma was added this past October. Everyone has gotten along fine until this past week.
Any suggestions on a cause or possible solution? The only option I can think of is having to remove the gramma if this continues.
