I just bought a betta, I have had one before so now I can handle it. But I also want to increase my aquarium with more fish. My dad says that salt water is hard to keep up with, so I want to try fresh water. So I know that some fish can go with bettas but which do you suggest, my betta is Mr.Blue(he is blue) a nice bright blue with a green head and mor puplish tail at the tip. Very beautifu. Any fish suggestions?(fresh water)