Ok - i know nowt about parrots as they aint my thing.
Angels: Now they ARE....
36G should be ok for them for a pair but how tall is it - angels NEED height in a tank, a min of 18 inches, theyd be happier with 2ft.
If you dont have that height, dont get angels. They will never look as amazing as they can without the height, they will just look poor and cramped.
Angels either need to be pairs, ie pairs they choose themselves, or groups of at least 5/6. Again you dont have room to grow 5/6 to maturity, you either buy a pair who ARE a pair and thats not cheap (wouldnt part with my breeding pair for less than £40 and they arent especially stunning as Angels go), or you buy juveniles and hope they pair up fast and return the others.
If you JUST get two angels you could be ok or they could hate one another and when they DO they can do some serious damage to one another, and of course stress each other and the other tank inhabitants out to the point of illness and death.
Corydoras - you need more than two. Get 5. They are not happy alone or even in pairs they need to be in a group.
silver dollars again i think these need to be in groups, and suspect although may be wrong that you dont have room for a group.
Sharky things - no idea if you dont know what it is. They all tend to be aggressive to some degree or another - how this affects their tank mates depends on the size of the tank and how YOU set it up. A bare tank will be bad, a tank set up taking care to provide plenty of hiding places, break fishes line of sight to one another etc will be much better.
A lot of sharky things grow quite big, frinstance, Bala Sharks - and these also need to be in groups.
Em
i love parrots
