20 Gallon Tank - Overstocked?

[MyFishKaren]

I currently have a 20 gallon tank pertaining:
2 Angelfish
1 Dwarf Gourami
1 Dalmatian Molly

Is my tank overstocked? Would I be able to add any other fish, and would I be able to add an algae eater?

Thanks,
MyFishKaren

 

[NickAu]

Your tank is too small for Angels, I also think 20 g is too small for Mollies also they are very social fish and should be kept in groups.

 

[Demeter32]

Only the dwarf gourami is suitable for a 20gal tank. The angels will get too large and as Nick said, mollies prefer company so adding friends won't go well in that small a tank.