Pajama cardinals misbehaving why?

[sresczenko]

I just got two pajama cardinals. One minute they swim together like best buds and the next minute one is harassing the other. One then proceeds to isolate to a corner and the other under a cave rock. Is the one sick that’s getting picked in?

 

[KrisReef]

Do you have two males? They are territorial

 

[sresczenko]

Oh I have no idea. I wouldn’t know how to tell. They’re about the same size. Will they quit once other fish are added? Because I’ve got a tomini and coral beauty coming toward end of month.

 

[CatBag]

If they are like bangai cardinals after feeding look at their bellies you should see a small tab kinda protrusion. 1 tab is male 2 is female ? Or otherwise around I forgot but you should at least be able to tell if they are same gender or not.