While it's not the brightest star in the constellation (that would be η Piscium, also called Kullat Nunu), Alrescha is the largest in terms of size.
However, it's important to note that "biggest" can refer to different things when it comes to stars:
* Size (radius): Alrescha is a giant star, significantly larger than our sun.
* Luminosity: η Piscium is brighter than Alrescha, meaning it emits more light.
* Mass: While Alrescha is larger, it's not necessarily more massive.
Therefore, depending on what "biggest" means to you, the answer might be slightly different.