Angelfish can indeed live in a tank without bubbles. Bubbles are not necessary for angelfish to survive. They get oxygen from the water through their gills, just like other fish. Bubbles are often seen in aquariums because they help to oxygenate the water and break the surface tension, but they are not essential for angelfish.
In fact, angelfish may prefer an environment without bubbles.
For example, some angelfish may be stressed or bothered by the noise and movement of bubbles, especially if they are particularly large or numerous.
Additionally, bubbles can disrupt the surface of the water, which can make it harder for angelfish to breathe air from the surface if they need to, such as when they are stressed or ill.
Therefore, while angelfish can certainly survive in a tank with bubbles, they do not necessarily need them and may even prefer an environment without them.