I understand the mindset of wanting to buy them small, grow them on, and wanting to breed them in the future; because that is exactly what I was like 8 years ago.
But being here now, 8 years later: 3 Panaque nigrolineatus (25-40cm), 7 Panaque cf. armbrusteri 'xingu' (18-27cm), 1 Panaque cf. armbrusteri 'tocantins' (18cm), 2 Panaque armbrusteri (12-15cm).
My advice - Keep a few now just for the fun of it, try another shorter term project, and when you're really able to, do it properly. Get several huge tanks with all the trimmings, go to your best LFS and order 10 large adults, pick out a good ratio of male/female and see what happens from there.
But being here now, 8 years later: 3 Panaque nigrolineatus (25-40cm), 7 Panaque cf. armbrusteri 'xingu' (18-27cm), 1 Panaque cf. armbrusteri 'tocantins' (18cm), 2 Panaque armbrusteri (12-15cm).
My advice - Keep a few now just for the fun of it, try another shorter term project, and when you're really able to, do it properly. Get several huge tanks with all the trimmings, go to your best LFS and order 10 large adults, pick out a good ratio of male/female and see what happens from there.