Did you know fantastic help is an anagram of Planet Catfish? This forum is for those of you with pictures of your catfish who are looking for help identifying them. There are many here to help and a firm ID is the first step towards keeping your catfish in the best conditions.
Jools, the number you're looking for is L301, but as you know is that together with L124 Ancistomus sabaji (Armbruster, 2003). The author probably didn't know there is a form in Pará which might be the same species, at least he didn't mention it in its description. Well, nobody is perfect.