0.8 Gallon's marina Betta Kit.5 led bulb shelf lite. No filtration.
With this aquarium you need to do a full water change once every 2 weeks minimum. And use prime by seachem in water changes and feed your Betta once a day with Betta bio gold.
"just keep swimming"
I have had many aquariums from brackish to fresh to being a koi butler made them giant. Just got out of my brackish tank (started to leak gerr) went back to basics.
The pet trade gets a bad rap for exploiting wild animals but sometimes the opposite is true.
Modern advances in technology affect every industry - even the aquarium hobby.
If you are looking for a unique invertebrate to add to your saltwater tank, consider the sea urchin.