You could use some taller decorations to fill out the tank. And more plants is always good
Welcome to fishlore!
There are types of gourami that are completely peaceful and non nippy (such as honey gouramis) but dwarf gouramis are a bit feisty, however it's a bit off topicAh I wasn’t aware Gourami were a nippy type of fish, I’ll be going neon probably anyway! Thanks