My first try fish and plants in the sea shallow water. There are mistakes I have noted for another time.
Cyclids are river fish, tropical, these are really tropical river fish. used to keep cyclids years ago. Some live in differend PH levels. while most are freshwater,
Discus an example of a cyclid that will live in sea water. (Corrected)
Next 2 paintings, a scene and a full canvas of Hydrangeas.