Accidentally clicked post before completing
...Without the zoox to absorb the light, the coral produce florescent proteins to absorb powerful solar radiation, and reduce light stress. This is the reason why corals have fancy colored growth tips.
The same thing happens when coral bleaches, as the coral tissues loses zoox, they become vulnerable to photo damage. If the coral have sufficient reserves, they produce florescent proteins to mitigate the damage. That's why bleached corals can look surreal for a while, just before they succumb.
Excessive zoox, on the other hand, pr
When it comes to coral color, aquarists often focus on two factors: zooxanthellae and florescent proteins. The zooxanthellae (zoox) which is a symbiotic organism living within the corals (zoo-: animal, xanthe: yellow). Like the name suggest, zoox are yellow in color. They live within the tissue of coral, grow and multiple based on the availble inorganic nutrients. Coral derives nutrients from zoox, and in turn provide refuge and inorganic nutrients to support their photosynthesis.
Since zoox is yellow, its concentration will directly contribute to the golden/yellow c