I wasn't planning on adding anymore fish for a while since I just added some not too long ago but I was at work today and noticed a GIANT rainbow shark. He was on hold until close for a customer but he never came so....I BOUGHT HIM. After I caught him and had him in the cup I measured him, he is every bit of 7" if not a little more! I have him floating now I am so excited! I will post photos later. I have to finish cleaning before bed.