Hi,
In the picture you can see there are black catfishes with light spots. In order to be able to identify a species to some extent, you need very good pictures - generally from the side. A picture of the mouth including teeth would also be desirable.
Hypancistrus contradens or Hypancistrus cf. contradens (L471) and Hypancistrus sp. "L 201" are also difficult to distinguish from one another. There are probably also various hybrids of these now.
Greetings
Elko