Here are a few options for what to do with a deceased betta:
* Flush it down the toilet: This is the most common and humane option for a small fish.
* Burial: If you want to bury your betta, you can do so in a small, shallow grave in your garden.
* Composting: Composting is a natural and eco-friendly option for dealing with deceased pets.
* Aquarium Memorial: Some people choose to create a memorial for their betta fish in their aquarium, such as a small stone or a decorative item.
It's important to note that you should not bury a fish in a public place, such as a park or a cemetery. These places are typically reserved for human remains.
Remember, always handle a deceased fish with care and respect. You should wash your hands thoroughly after handling the fish.