hmmm, i'd say some real plants would be nice. Things like vallisneria or java fern. perhaps some riccia on top. As for fish, some cyprinids would be fine: danios and white cloud. keep the tank covered!!!! Or, some guppies, or a betta, or some tetras like neon tetra, glowlight tetra, black neon tetra, black tetra... Lol, there's so much choice!!!