When I first read the message, I thought the fish you posted was a L102 - but seeing as you're questioning it, I would guess that it's
.
It's a bit hard to tell from that picture, but given that they are are fairly common fish with big black-and-white spots, that would be my first guess.
In my personal opinion, if you want to breed plecos, you'd be best off having one species per tank - there are all sorts of reasons for this, the main one being that there's no interspecific aggression, which can otherwise cause the males to "fail to spawn".
Another reason to keep single species tanks is that you don't have to "consider the others" when you do things to the tank to trigger a spawn with feeding or water chemistry changes - and you know which group is eating what and how much, etc.
For most species, I'd say that 1M 2F is the best proportion, but 1M 1F will also work. More males can sometimes make the dominant more attractive (strange ways these things work), but more often than not, it causes fights between the males that causes the male to be more occupied with fighting than wooing, which leads to no spawn.
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Mats
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