''Ptychochromis ernestmagnusi'' is a species of

fish A fish (: fish or fishes) is an aquatic animal, aquatic, Anamniotes, anamniotic, gill-bearing vertebrate animal with swimming fish fin, fins and craniate, a hard skull, but lacking limb (anatomy), limbs with digit (anatomy), digits. Fish can ...

cichlid Cichlids () are a large, diverse, and widespread family of percomorph fish in the family Cichlidae, order Cichliformes. At least 1,760 species have been scientifically described, making it one of the largest vertebrate families, with on ...

only known from the Mananara du Nord River in northeastern

Madagascar Madagascar, officially the Republic of Madagascar, is an island country that includes the island of Madagascar and numerous smaller peripheral islands. Lying off the southeastern coast of Africa, it is the world's List of islands by area, f ...

, but it is probably more widespread in that region.Sparks, J. S., and Stiassny, M. (2010). ''A new species of Ptychochromis from northeastern Madagascar (Teleostei: Cichlidae), with an updated phylogeny and revised diagnosis for the genus.''

Zootaxa ''Zootaxa'' is a peer-reviewed scientific mega journal for animal taxonomists. It is published by Magnolia Press (Auckland, New Zealand). The journal was established by Zhi-Qiang Zhang in 2001 and new issues are published multiple times a week ...

2341: 33–51. If so, it likely occurs in the Mananara-Nord Biosphere Reserve (near the town

Mananara Nord Mananara Nord or Mananara Avaratra is a municipality in Madagascar. It belongs to the district of Mananara Nord, which is a part of Analanjirofo Region. The population of the commune was 35,148 in 2018. It is situated at the Route Nationale N ...

), which would give it a level of protection. It can reach in

standard length Fish measurement is the measuring of individual fish and various parts of fish anatomy, their anatomies, for data used in many areas of ichthyology, including Taxonomy (biology), taxonomy and fishery biology. Overall length Standard length (SL) is ...

Etymology

The

specific name Specific name may refer to: * in Database management systems, a system-assigned name that is unique within a particular database In taxonomy, either of these two meanings, each with its own set of rules: * Specific name (botany), the two-part (bino ...

honours Ernest Magnus (1908-1983) who was the uncle of the

German-American German Americans (, ) are Americans who have full or partial German ancestry. According to the United States Census Bureau's figures from 2022, German Americans make up roughly 41 million people in the US, which is approximately 12% of the pop ...

marine biologist Marine biology is the scientific study of the biology of marine life, organisms that inhabit the sea. Given that in biology many phyla, families and genera have some species that live in the sea and others that live on land, marine biology clas ...

and

ichthyologist Ichthyology is the branch of zoology devoted to the study of fish, including bony fish (Osteichthyes), cartilaginous fish (Chondrichthyes), and jawless fish (Agnatha). According to FishBase, 35,800 species of fish had been described as of March 2 ...

Rudolf Arndt Rudolf Gottfried Arndt (31 March 1835 – 29 January 1900) was a German psychiatrist from Bialken, district of Marienwerder. Biography Arndt studied in Greifswald and Halle. As a student, his instructors included Felix von Niemeyer (182 ...

who gave generous support to the author's research, at the request of Anrdt's family, whose “generous gift” supported the authors’ research. Magnus played an important part in assisting the Arndt family to survive in

Berlin Berlin ( ; ) is the Capital of Germany, capital and largest city of Germany, by both area and List of cities in Germany by population, population. With 3.7 million inhabitants, it has the List of cities in the European Union by population withi ...

after the

Second World War World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...

and then emigrate to

New York City New York, often called New York City (NYC), is the most populous city in the United States, located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive w ...

in 1950, by giving them "food, clothing, shelter, love, many kindnesses and moral support".

References

ernestmagnusi Cichlid fish of Africa Freshwater fish of Madagascar Taxa named by John Stephen Sparks Taxa named by Melanie Stiassny Fish described in 2010 {{Cichlidae-stub