Thank goodness we have another goldfish enthusiast here, Raychel to help with goldfish queries.
And I doubt singletails are very likely to get attacked by most plecos. Even then, plecos normally will attack and suck the slime coat of slower or even sick tankmates. Not really a common scenario. I've combined bristlenose plecos with goldfish with no issues. Common plecos on the other hand are out of the question especially when tank size is not appropriate for both fish most of the time.
And I doubt singletails are very likely to get attacked by most plecos. Even then, plecos normally will attack and suck the slime coat of slower or even sick tankmates. Not really a common scenario. I've combined bristlenose plecos with goldfish with no issues. Common plecos on the other hand are out of the question especially when tank size is not appropriate for both fish most of the time.
I don't absolutely net my fancies with nets at all. They're easily damaged by the nets. Go with bare hands instead. Singletails are indeed a different case.