Hydrocynus [SEP] parent taxon
Hydrocynus
Hydrocynus is a genus of large characin fish in the family Alestidae commonly called "tigerfish," endemic to the African continent. The genus name is derived from Ancient Greek ὕδωρ ("water") + κύων ("dog"). (In fact, this fish is popularly referred to as "poisson chien" (dog fish) in French-speaking West Africa.) The genus contains five species, all popularly known as "African tigerfish" for their fierce predatory behaviour and other characteristics that make them
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