Your current mix of fish is somewhat puzzling. Are the "yellow labidios" actually Labidochromis caeruleus cichlids? If so, these cichlids prefer water conditions with a pH between 7.8 and 8.9. Not knowing what your "purple cichlids" are, I suspect that is the case with them as well.
Other fishes like gourami, tetra, corys and catfishes all prefer acidic water conditions, something that is pH 7.0 and below. So there is already some incompatibility issues with your current mix. I would actually advise to revisit your current mix first and have the cichlids move to another tank.
As for your future additions, glass eel is a definite no no. They can grow up to up to 100cm/39" in size, so they would need a larger tank size, at least 150cm/5' and above. They will eat fish as well, so they are not suitable in communities with small fishes.
Assuming that pH of your tank is on the acidic or close to neutral end, the other fishes you mentioned may fit in. However, it is advisable that you find out more about each type of fish as there may be certain characteristics that is incompatible with other fishes.
Rams are generally fairly good community fish, but may be a problem considering you have angelfishes in there. Elephant nose is best left for an experienced fishkeeper.
I sense that you seem fairly new to fishkeeping, so I would urge you to browse around and read up more. There is more to fishkeeping than putting fishes in the tank and feed them, e.g. compatifility, bioload, filtration and so on. Understanding more of these can help make your fishkeeping hobby more successful.
Bookmarks