Endangered
Zona
Bedotia geayi
The red-tailed silverside, or Zona is a Madagascar rainbowfish endemic to the Mananjary River drainage in Madagascar.
Appearance
In addition to meristics, the two species can be separated by the exact colour pattern on their tail fin (males of both typically have red in the tail) and the distinct red spot on the lower jaw of breeding male B. Geayi (lacking in B. Madagascariensis).
B. Geayi was described in 1907 by the French zoologist Jacques Pellegrin from a type collected by the pharmacist and natural history collector Martin François Geay (1859-1910), who Pellegrin honoured with its specific name.
Range and habitat
The red-tailed silverside, or Zona is a Madagascar rainbowfish endemic to the Mananjary River drainage in Madagascar. Zona are threatened by both habitat loss and introduced species.
Pins are Wikidata “endemic to” fields. Orange dots, when present, are GBIF occurrence tiles — survey bias included.
Habits
Silversides and rainbowfishes need clear water and a place to school. A lake form does not commute to the next basin.
In crisis
Zona is Endangered on this catalog because that is the IUCN category stored on Wikidata. Confirm the official criteria and any later count on iucnredlist.org.
Sources
Written for this catalog from the English Wikipedia article on Zona, Wikidata item Q134492. Family and order context is original field-guide writing about the group, not a copied assessment of this one species. Wikipedia text is CC BY-SA. Not an IUCN assessment. Counts, when quoted, can change — confirm them on the recovery programme and on iucnredlist.org.
