Can I put these together in a 20 gallon? I have a ten gallon refugium (20 gallon sump) and they both eat frozen, so feeding is not a concern.
I am wondering if these two will fight, they are both male. The green mandarin is already in the tank, I'm introducing the ruby red scooter, which is why I am wondering. They are the same size if that matters.
I am wondering if these two will fight, they are both male. The green mandarin is already in the tank, I'm introducing the ruby red scooter, which is why I am wondering. They are the same size if that matters.



