With some new fish coming, I did a fun exercise: a calculation of the visual impact of each fish on how full the tank looks as time passes and fish grow.
When the fish arrive, I will have this:
Quantity: Number of fish
Presence level (1 - 5): an evaluation on how noticeable is a fish, based on its color, shape, how fast it swims, how much it stays hidden/in the open.
Length and height in centimeters.
Area: a rough claculation based on the area of an ellipse.
Individual impact: area of the fish × presence level
Total impact: Individual impact × Quantity
%: Visual impact of the(se) fish compared to the total.
These estimations point to the 10 threadfin cardinals being the fish that will be more noticeable in the tank by far, folowed by the flame angel and tomini tang.
I made an estimation of the fish sizes in 2 years time:
A single Majestic angel will be more noticeable than the whole group of cardinals.
More importantly, in 2 years, without adding more fish, the tank will look twice as full! (Total of 904 vs 2099).