I honestly figured, was the more line bred variety, being less durable than something with better genes
Fish like the platinum rummy aren't necessarily less durable. Whether you like the little scale thing or not is personal - I like fish as they look in nature, since I like to think I can learn about nature from them.
Their weakness can come from they are produced - overcrowded, rushed and sometimes with antibiotics, and then how they are shipped. Wild caught fish have already run a few gauntlets to be alive, and haven't had their growth rushed as can happen with aquaculture. But a wild form fish bred in Singapore can have the same stresses as one with a minor scale disorder. It's the source.
If they produce a balloon rummy, no, there the deformity chosen directly hurts its victim.
@anewbie - we're veering off with our eartheaters, but while I can say unreservedly that I love watching that group of fish, I don't have even one here. Watching them convinced me I couldn't keep them correctly as my largest tank is a six footer. I just don't have the tanks I'd need to do it right. I'm the opposite of monster fish aquarist - I just don't see the pleasure in keeping fish in tanks where they can't do what makes them interesting. It comes around to Magnum's point about interesting species.
To me, all the rummy group need to be in groups of 20 plus in tanks without larger competitors. Otherwise, they fall into behaviour that makes them boring to us. To all the rummys I kept in too small groups in the past, I say "I'm sorry. It wasn't you. It was me."