Angelfish

[croydon_downunder]

One med sized angelfish (scarlare) with a group of med sized discus? (6)

[Merrilyn]

Unfortunately croydon, I can't recommend it.

Angelfish carry parasites that they themselves are quite immune to, but they can infect discus.

Honestly, it's been tried before, many times, and some get away with it, but most of the time it all ends in tears.