Bony fish are more often recognized as food sources than as carbon regulators. They provide an array of services relevant to climate change mitigation. For instance, they store carbon within their bodies as they grow and export it to deep seas through their sinking feces and carcasses. But they also make carbonates from marine salts within their guts and excrete them at high rates. This makes them especially important within the inorganic carbon cycle of the oceans.
Click here for original story, Warming and overfishing could switch the role of fishes in the marine carbon cycle
Source: Phys.org