Betta fish. SUDSAKORN KEMMUD/GGETTY IMAGES
A fish is an excellent low-care companion. They don't require much hands-on care beyond regular feedings and tank cleaning. With their long, vibrant fins, betta fish (Betta splendens) give the impression of being exotic pets, yet they are quite common in pet stores and only require pellet food.
The idea that betta fish need to live alone is among the most persistent ones. (They go by the name Siamese fighting fish as well.) To be clear, it is not a good idea to pair up two male betta fish. However, you can try matching two female betta fish or pairing betta fish with other aquatic species.
