I have a 10 gallon cycled tank. All water parameters are in line. I previously had 2 bettas with a divider. One had been ill since I purchased him a year ago at Walmart. His fin rot finally got the best of him (he was in and out of quarantine tanks) and he died recently. So now I have one betta and just added 3 cory cats. I just got them yesterday and one of them is very listless and his color is more pale than the other 2. The other 2 dart around and seem healthy. I did notice the top fin on both healthy corys looks like they're split (I am wondering if the betta did this). It's not too bad and I've never seen the betta attack any of them. In fact they swim right beside each other and there is no aggressiveness. Well, the "sick" cory's top fin just kind of lays flat and does not raise like the other 2. So...I have 2 questions...
1)Since I am new to corys any ideas on what could be wrong with the "sick" one? Should I quarantine him?
2) I was thinking of adding a total of 5 corys with the betta in my 10 gallon. Is this overstocked? I am not exactly sure of the type of cory...they are sold as cory cats and have stripes (about 1 1/2 inches).
Thanks for your help!
1)Since I am new to corys any ideas on what could be wrong with the "sick" one? Should I quarantine him?
2) I was thinking of adding a total of 5 corys with the betta in my 10 gallon. Is this overstocked? I am not exactly sure of the type of cory...they are sold as cory cats and have stripes (about 1 1/2 inches).
Thanks for your help!
