Hello! I bought a dwarf Gourami yesterday, along with 10 neon tetras for my 20 gallon tank. The tank has been cycled and the neon tetras are all fine. My gourami however is either at the top or bottom, just swimming and breathing really heavy. I have an airstone, and both of my filters are providing lots of air. The gourami also isn't eating much, and if he does he just spits it out. The parameters are all 0, and the pH is at 7.8. Any help is appreciated!