Glass aquariums offer the best environmentally friendly and visually clear option.
There are many layout options for aquariums, the most popular being rectangular glass aquariums that offer a blank canvas for your imagination.
Another popular option is a sectioned aquarium that incorporates a space for filtration and heating hidden away at the back. These are terrific for small setups with only one to a handful of fish, and very popular with Siamese Fighting Fish (Betta splendens) owners.