Ooh, I dearly hope you can combine that civic with agriculture districts with Agrarian Idyll and/or Catalytic Processing. Imagine having both, agriculture would be a HUGE part of your economy, which would be pretty neat.
From the screenshot, it looks like Anglers is incompatible with Agrarian Idyll (honestly not that big a deal, Agrarian Idyll is annoying to use anyway) but you can combine it with Catalytic Processing.
Looks like it will be quite interesting to build around. You only get one Angler per district, so for really heavy food production, making all the districts will be annoying early on and planet size will eventually be an issue later (even with the discount and the unlimited food districts on Ocean worlds); per pop though, this is a very good Worker job (assuming the usual food bonuses still apply). Pearl Diver is interesting: overall output is not that impressive, but it's (presumably) a worker job that makes CGs with no mineral input. (If it consumes 3 minerals then it's just bad, use Artisans instead.) It probably makes sense to use these instead of Artisans for a period in the early game; combined with Catalytic Processing, that means you have no mineral upkeep, so all the minerals you get can go on buildings/districts. Later on though, Pearl Divers will probably become inefficient compared to Artisans (I doubt that Pearl Divers will benefit from Civilian Repli-Complexes).
I'm also curious if/how this civic changes jobs from hydroponics farms and ringworld farms.