There is a bacteria for everything on this planet…even bio-remediation in the prawn RAS…

https://english.elpais.com/science-tech/2022-05-10/scientists-discover-a-new-fuel-eating-bacterium-below-car-tank-lids.html

Insights into prawn benthic adaptation…

The expansion of LW options sensitive to light at the 560 nm wavelength facilitates feeding of the shrimp in benthic environment with predominantly yellow and red (long-wavelength) light…

hmm…looks like the humic and fulvic acid colours.

https://www.nature.com/articles/s41467-018-08197-4

UV light can influence prawn and bacterial growth also…hey, even algal growth…and provide heat to culture even…

https://www.globalseafood.org/advocate/colored-led-lights-can-influence-shrimp-growth-water-quality-in-biofloc-culture/