Cromeria [SEP] parent taxon
Cromeria
Cromeria is a small genus of fish in the Kneriidae family found in fresh waters in the Sudan, Mali, and Guinea in the Nile and Niger Rivers of Africa. These reach a length of up to 4.4 cm.
The currently recognized species are:
- "Cromeria nilotica" (naked shellear)
- "Cromeria occidentalis"
References.
- Eschmeyer, William N., ed. (1998). "Catalog of Fishes Special Publication of the Center for Biodiversity Research and Information",
Taxon in disguise
In bacteriology, a taxon in disguise is a species, genus or higher unit of biological classification whose evolutionary history reveals has evolved from another unit of similar or lower rank, making the parent unit paraphyletic. This happens when rapid evolution makes a new species appear radically different from the ancestral group, so that it is not (initially) recognised as belonging to the parent phylogenetic group, leaving the latter an evolutionary grade.
While the term is from bacteriology, parallel examples are found throughout the tree of