First, I would like to know if this one is "pregant" (I know its not the right term). I did try to read on the subject, but it just made me more confused.
The black one was chassing the first one for a while and now the fish began to get fat really fast. (They are still pretty small, maybe 1inch, or so)
Also, after calculating the dimensions of my fish tank, I found out it was a 25 gallons. My question is, can two goldfish live and grow well in this one? Could I even go to add an other one or better not? If not can I atleast add a mudsucker to help keep the tank clean?
Ps. I hope my english wasn't too bad, my first language is french