Ptychochrominae
Encyclopedia
Ptychochrominae is a subfamily in the cichlid family of fishes. They are restricted to lakes and rivers in Madagascar
, and the majority are threatened
. Most cichlid genera
native to Madagascar are included in this subfamily; the only exceptions are Paretroplus
(subfamily Etroplinae
) and Paratilapia
(sometimes included in Ptychochrominae, but likely belongs in its own subfamily).
Madagascar
The Republic of Madagascar is an island country located in the Indian Ocean off the southeastern coast of Africa...
, and the majority are threatened
Threatened species
Threatened species are any speciesg animals, plants, fungi, etc.) which are vulnerable to endangerment in the near future.The World Conservation Union is the foremost authority on threatened species, and treats threatened species not as a single category, but as a group of three categories,...
. Most cichlid genera
Genera
Genera is a commercial operating system and development environment for Lisp machines developed by Symbolics. It is essentially a fork of an earlier operating system originating on the MIT AI Lab's Lisp machines which Symbolics had used in common with LMI and Texas Instruments...
native to Madagascar are included in this subfamily; the only exceptions are Paretroplus
Paretroplus
Paretroplus is a genus of fishes in the cichlid family, all of which are endemic to lakes and rivers of Madagascar. The vast majority are threatened and restricted to the northwestern part of the island. Only P. polyactis is found in the southern half of Madagascar and only P. polyactis and P....
(subfamily Etroplinae
Etroplinae
Etroplinae is a subfamily in the cichlid family of fishes. The subfamily includes two genera: Etroplus, which are the only cichlids native to India and Sri Lanka, and Paretroplus from Madagascar .-References: : Molecular phylogeny and biogeography of the Malagasy and South Asian...
) and Paratilapia
Paratilapia
Paratilapia is a genus of cichlids with only two known species. They occur on Madagascar.Phylogenetic analsysis of DNA sequence and morphological data have hitherto been unable to resolve the relationships of the genus to satisfaction...
(sometimes included in Ptychochrominae, but likely belongs in its own subfamily).