The fish book I have has two different fish with different scientific names as well. In the little blurb about one it says 'there are several species of BN, all fairly similar. The behavior in an aquarium is identical'. That is why I asked. Mine looks like Ancistrus temminckii.
The other is Ancistrus spp. But I belive mine is the ancistrus temminckii based on the picture because mine has a bit of blue on it's tail fin and the picture of it in the book has a light colored tip on the tail fin as well.
If the fish in question is aquarium-bred, chances are it's a hybrid. There are several different species of BN's, but unless the fish was wild-caught, its ancestry is questionable. Check out planetcatfish.com for specific details for a positive ID.