I agree that you really dont need to add anything else but the concept you are looking for really won't happen anyway unless the shoaliing fish feel a definite threat in the tank. One of the reasons that fish shoal is for protection. In an aquarium, once they become accustomed to their surroundings and realize that there isn't a predator that is a threat to them in the tank, they will pretty much go their seperate ways and not shoal or school anymore (there is a difference between shoaling and schooling and
here is a link to a good thread about it).
Thanks everybody for interesting thread.
My tank is 35 UK gallons - 160 litres, and I know that the fish I have in there currently are definitely not overcrowded, and do feel that the tank will take a few more (small) fish.
i think you should deffo research about the angel fish and work out how long you will be able to keep them in that tank for (ask on this forum and read on internet), as an upgrade would be required at some point if you wish to keep them for their full life and in optimal condition, but to tell you tank is "over stocked" or "fully stocked" at 160 litres, based on the
information you have disclosed is in-correct in my opinion.
I would say from my experience on this forum and others, really you want to eventually look at a tank at least 20" in height and about 240-300 litres for Angel Fish in the longer term, especially if you keep more than a pair of them
But to simply say you tank is over-stocked now, is actually a little ignorant in my view, and needs further clarification, all be it if you come back and tell me your Angel Fish are almost fully grown, it would be over-stocked LOL
No ones even asked how big your angel fish are, and yes i do think it matters how big his angel fish are at the moment before you start with "over stocking" posts.
Now if people want to air their personal opinion about how you should only keep fish if you straight away have a tank that can accommodate them for life, then fair enough, there is a logic to this, but its still personal opinion.