Christophe ("Stofmania") Aubin wrote that on his 2019 expedition to Congo, that he found this species all over the place.

03/03/2019 - Journey : Bivéla <--> Banda
The rest of the day? If I tell you that on almost every point, whether 200m or 400m, I met an old acquaintance from Gabon ... you know who I'm talking about? Aphyosemion escherichi of course! He is everywhere this fish! And unfortunately, he is not accompanied by any other Aphyo, as is sometimes the case. To note an Epiplatys interesting all the same, of the huberi group.