Is this tank suitable for a betta?

[Soubriquet]

I’ve been given this tank. Obviously I need to get a heater and a filter but is it big enough for a betta?

link

No idea about fish, like at all, and originally my sleep deprived brain thought 'fishnet' was a thread for those kinda tights. So obviously, your post would've been about if a certain tank top was fine to wear with fishnets to a party? Gathering? Called a Betta? Properly did a double take when clicking the link - sharing in case it makes anyone else laugh as much as it did me (probably not, have I mentioned I'm sleep deprived?!)

thats hilarious

To answer your Q, while it's a good size for a Betta, they are very good jumpers and can get through surprisingly small holes - the gaps around the glass lid on that tank would concern me.

I had a short-tailed Betta in a 60L tank, it had a small hole at the back for the filter wires but otherwise a solid lid. I heard a splash one day and looked up to see the Betta stuck to the wall behind the tank and slowly sliding down...I was quick to scoop him up and put him back in the tank and he was fine!