So the angels are aggressive towards each other and I bought them when they were pretty big. Ive had the tank running for about 3 months and the only issues are the angel fish aggression towards each other but it resently stopped.
I will be buying more Cory cats and but can I get a diff type and still relieve stress? Also since I still want GBR can you recommend a replacement for the cherry barbs?
The GBR needs water too warm for cories, so you will need to re-home the three cories. If you keep them and do not add rams, then yes, different species is OK. I have found that while it is definitely recommended to have no less than five of a species, and more is always better, a combination of species seems to provide the security these fish need. But some do shoal together as a species more than some others; my Pandas are like this, with seven of them in a tank with 50 various cories, they tend to remain together as a species more than any of the other 12 species. But the temperature should not be higher than 76-77F (24-25C) and this is much too cool for rams.
Before I start suggesting new species, I would want to be more certain of what is/will be in the tank. The angelfish are a real threat here, though you may have lucked out; individual fish can sometimes behave contrary to the norm for a species, though this can sometimes not last long before they begin killing one another. I always think it safe to go with the norm rather than hope otherwise.
I missed the gold gourami previously, sorry. That should not be in with angelfish. Gourami and angelfish are very similar in the territorial nature of males, and in their aggression. If the gourami is a male, this could be even worse than the angelfish. Females usually tend to be less rambunctious, but we have a member here who had a female gold gourami that after several weeks suddenly went after every other fish in the tank and several were killed. This is the most aggressive of the small/medium sized gourami. The species is
Trichopodus trichopterus, the common blue gourami which has been developed into several varieties such as gold, cosby, 3-spot, marble, etc. All have nasty temperaments.