Building a newt vivarium. Advice welcomed :D

SO far the sand works well. He seems ok with it all and now has three white mtn minnow as tank mates. More pics to come very soon :D

I was considering firebelly newts and read somewhere that White Cloud Mountain Minnow MAY be compatible. how is that working for you?

I already have zebra danios i thought might work, but not sure if I want to risk newts being nipped at to death or unable to get their food.
 
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