Your 100% correct, these fish are very hard to keep. But they can be kept successfully. The problem that I see is you have a very over stocked tank. Angels when fully grown they will need 10 gallons of water each, not only this you said that you had one other plecos. My guess is that it is a common ...

Can you list from the easiest or hardest pleco to breed from my wholesalers list.

L260
L27
L27
L124
L204
LDA5
LDA33

Cheers, I am looking to get 5 of 3 speices for my breeding programe.