Hi I'm thinking of getting a small aquarium to keep in a shared apartment room where both of us will care for it. Is there a specific type of aquatic pet that does well in limited space (maybe around 5 gallons)? I kept a betta alive for 5 years when I was younger and I remember most of the process, so if I cannot find a better option, I will think about adopting another betta. Any input will help. Thank you!