So, I recently decided that in my plans to remodel my basement I would like to include a ~120 gal built in Amazon themed community aquarium. Since I haven’t kept fish since I was a kid (none of with faired particularly well) I am planning on starting with a 20-30 gal tank depending on what I can find on craigslist. That’s my plan onto my questions. I realize this is largely a matter of opinion, but aesthetically are there guidelines for stocking? For example do too many schools look cluttered, are multiple “centrepiece” fish distracting? Here is my planned stock list for the 120gal tank: 4x Angelfish 6-8x Cory Cat 10-12x Pencilfish 8x Red eye tetra 1x Pleco 8-10x Hatchetfish For my startup tank I am thinking (depending on what tank I end up with): 6x Cory cat 8x Pencilfish 6x Hatchetfish Can I add one Angelfish to this setup and add more when I get the bigger tank or should I add them at the same time so they are the same size? Thank you in advance for your answers and insight.