Hello all. I was planning on adding some neon tetras to my 20lg tank this weekend but I keep hearing how terribly hard they are to keep. We want something bright and colorful with lots of movement. Right now we have four zebra danios, two long-finned leopard danios, and one tiny guppy (he was a happy accident). We were planning on adding Mickey Mouse platys as well, and probably some cherry shrimp for clean up. LFS (respectable place, I trust them tremendously) suggested neon tetras, but now I keep reading that they're difficult to keep alive. Is there a different tetra or even a different species of fish that would be colorful and add to the fun movement in our tank? Or are the neon's not as difficult as I've been reading? Thank you!