I say not a fish because I already have 5. Please hold off on all flaming .. I know 5 fish is lots for 20g. I have had no problems, no territory problems, and no problems with paramaters.. just so we're all clear (also, why im upgrading
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I am probably maxed to a 45g tank already. But.. I may add one more fish, and I want it to be something colorful and active.. that's why I don't want a fish that will hide in the sand all the time
What would you personally recommend for moving the sand? I am leaning towards a cucumber myself.