Ptychochromis ernestmagnusi is a species of fish

Fish

Fish are a paraphyletic group of organisms that consist of all gill-bearing aquatic vertebrate animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups...

 in the cichlid

Cichlid

Cichlids are fishes from the family Cichlidae in the order Perciformes. Cichlids are members of a group known as the Labroidei along with the wrasses , damselfish , and surfperches . This family is both large and diverse. At least 1,300 species have been scientifically described, making it one of...

 family. At present, this recently described species is only known from the Mananara du Nord River in northeastern Madagascar

Madagascar

The Republic of Madagascar is an island country located in the Indian Ocean off the southeastern coast of Africa...

, but it is probably more widespread in that region. If so, it likely occurs in the Mananara-Nord Biosphere Reserve (near the town Mananara Nord

Mananara Nord

Mananara Nord or Mananara Avaratra is a town and commune in Madagascar. It belongs to the district of Mananara Nord, which is a part of Analanjirofo Region. The population of the commune was estimated to be approximately 30,000 in 2001 commune census....

), which would give it a level of protection.