Can anyone suggest a good tank mate for looks and/ or cleans. I was thinking of a glass catfish but the pet store guy said my Betta might confuse it with another Betta. My tank is pink, black, and white so I would like to stay in those colors. I also am looking for a good "cleaner." I have an assassin snail in each of my tanks but was thinking of getting a crab for each. I heard they eat everything. Any suggestions? If I could get a black, white, or pink cleaning fish that would be best.