If the gills of the fish are torn after getting caught in a net, it will die due to lack of gaseous exchange.
It is the gas exchange system in fishes. Like humans, aquatic species like fishes need respiration and the process of gas exchange in order to thrive. However, the solubility of the respiratory gases is very low in water, thus, fishes have evolved unique organs called gills, which are formed of many filaments covered heavily in lamellae.
The gill lamellae is the plate composition, which helps in increasing the intake of oxygen when the water flows over it. The gills comprises blood capillaries, and this composition of gills enhances the surface area for gas exchange to occur, and increases the rate of diffusion.
Thus, when gills get torn, the surface area for an efficient gas exchange reduces, and the fish dies due to lack of oxygen.
Find out more information about gills here:
https://brainly.com/question/13937925
