Sharp photos from the marine aquarium?

I now have many branches and I wanted to sell them.
Unfortunately, I don't get any reasonable photos in blue light.
At the dealers and sometimes also at some private providers, these are really sharp in the blue light and even close-ups.

Does anyone have any idea how to do this with a Huawei P30 Pro?

You need light filters in front of the camera. Something like

https://reefdepot.de/arka-aquatics/3673-meerwasser-aquaristik-arka-myreef-studio-0710270148523.html