I personally would disregard most of what the fubar has said. It seems they don't quite understand the level of thought that goes into advising someone on there 'stocking'.
These fish are currently small and have the potential to grow larger and out-grow the tank, this you already know. At the moment at current size you are not over-stocked.
^^ This is a fair point, and is true.
IF (big if) you manage to bring all these fish thru to maturity then they will be too big for your tank. That situation is a few years off yet. Don't feel you have to re-home some fish just because someone has told you to - its only advice.
^^ I don't think it's a few years off until they will be getting to the point where they need a bigger tank, but it could be up to one year. And although it is only advice to re-home them, we advise this because it's hard to tell when the fish starts to be affected by being in too small an environment (be it temprement change, stunting or other things that can happen)
Stocking levels are fuged and manipulated however people see fit, some quote length, height, inch per gallon (but can't decide between US and UK!) and some ask what filter you've got.
^^ This particularly shows an unclear understanding. Most people on here that give you sound stocking advice will advise you in 2 ways. 1. For if you are a new keeper and/or your tank is less than 6months old and 2. For when your tank (and filter) is 6months old.
For 1. the following factors are taken into account... Tank dimensions (length, width, height), Volume (should be easily from dimensions...but sometimes people measure incorrectly), the body size of the fish (not just length, but also width, shape and diet are all considered) and it is normally presumed that you have a bog standard filter that is suitable for your tank (seeing as most new people buy a 'kit' it's normally fair to presume that).
From all of the above information, along with what is currently in the tank, and what type of fish you like people come up with a suggested stocking.
For 2. It is all of the above, but in addition we will ask how long the filter has been running (due to the size of your stock I estimated there was no way the tank had been set-up for 6months), from there we will ask what size filter it is, and what your weekly water stats are, aswell as your water change routine. Then what fish you have, and if neccesary what sizes they are. Often we will enquire to whether it is planted or not.
From the above answers people will be able to estimate if your tank is suitable to have more fish added, what fish would be suitable, and then advise what you might want to keep an eye on once they're added.
So as you can see...a bit more complicated than what thefubar suggested...
As long as the new additions don't attack/bully/eat your current fish (or vice versa) then choose away. I'd look into adding more angels (maybe with different colours to what you have) and some more corys. That way they fit with future re-homing problems too. But nothing is too urgent here chief.
^^ This is bad advice, this is the kind of advice that will set you up to fail. Easy example...if you took a liking to the green terror cichlid, they are extremely docile as juveniles, and once you got them home you would see absolutely no agression issues. But then as it matures you could easily find yourself in the situation where half you fish go missing overnight...killed by the green terror. By the way that is just one little example....there are many more fish where the same problem can occure.
Aside from that, and this is just my person opinion which you may or may not share, I don't think it it right to buy a fish knowing full well you cannot keep it for the entirety of it's life. And know that it will be forced to go through the stress of re-homing again. It has been well documented that older fish tend not to travel as well as fry.
Also depending on your tank dimensions you may be able to add another angel. Problem with angels is, they tend to pair up, and a mated pair can live happily in an average 200l tank. But 2 non paired angels could fight, and 1 single angel with a mated pair of angels would almost definitely be killed by the pair.
Apart from that I do agree more cories certainly wont hurt (though aren't a neccesity) and nothing is super urgent. But I figured if you know they'll need re-homing anyways, why not do it now and replace with something more appropriate?
Now I've said my piece, I'll go see what stocking plans I can come up with.
Could you give tank dimensions please?
