You have been advised in your previous thread that the EBs are (because of line breeding) a very sensitive species, prone to bacterial and fungal infections. If I were to keep them, I would keep them in a special tank, all to themselves where water would be changed daily, food intake would be monitored etc etc. I especially would not keep them with Oscars and plecos, coming from totally different water chemistry (they are also geographically incorrect)
But that aside, even the normal JDs do not do well with other even slightly more aggressive cichlids in nature. I have spent time snorkeling with them in Mexico.
The only places they seem to do well, is where there aren't any other cichlids, only dithering live bearers.
Take the JDs in the cenote below, where Mayaheros uropthalmus dominate, the JDs are torn up and relegated to hidy holes and caves, and their population does not compare.
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Below in Eden where JDs are the dominant cichlids, they are far healthier.
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