ESO 217-25 is setting in the Centaurus, named as Mermaid Nebula by amateurs

The Mermaid nebula, (a.k.a the Betta Fish nebula) is part of the 14,000 year old supernova remnant G296.5+10 or ESO 217-25. It is located in the constellation of Centaurus.​

​https://app.astrobin.com/i/j9glbp

https://manuel-astro.ch/project/eso-217-25-the-mermaid-nebula/

https://webbdeepsky.com/picture-of-the-month/archive/2025/4