Zoo Stock Species and the Red List
Zoo Stock Species and the Red List
Zoo Stock
This indicates that the species is included in the Second Zoo Stock Plan, which was formulated by the Tokyo Metropolitan Government in 2018. The plan sets goals for the next 10 years in three areas: "species conservation," "contribution to wildlife conservation," and "environmental education and conservation awareness." 124 animal species are included.
What is the Red List?
Based on scientific research, this is a list of wildlife classified by rank (category) indicating the degree of risk of extinction.
Livng Things Encyclopedia shows the categories (mainland and islands) assessed by the IUCN (International Union for Conservation of Nature) at the global level, the Ministry of the Environment for Japan, and the Tokyo Metropolitan Government for Tokyo.
The higher the category in each table, the higher the risk of extinction, and CR, EN, and VU are the three categories known as "endangered species." In Tokyo, species that are not at the NT (near threatened) level but are relatively rare are considered "species of concern."
|
IUCN categories |
|
|---|---|
|
EX |
extinction |
|
EW |
Extinction in the wild |
|
CR+EN |
— |
|
CR |
Serious crisis |
|
EN |
crisis |
|
VU |
emergency |
|
NT |
Near Threatened |
|
LC・○ |
Low Concern |
|
DD |
Data shortage |
|
LP |
— |
|
Japan (Ministry of the Environment) Category |
|
|---|---|
|
EX |
extinction |
|
EW |
Extinction in the wild |
|
CR+EN |
Endangered species |
|
CR |
Critically Endangered |
|
EN |
Endangered species |
|
VU |
Endangered species |
|
NT |
Near Threatened |
|
LC・○ |
— |
|
DD |
Lack of information |
|
LP |
Endangered |
|
Tokyo Category |
|
|---|---|
|
EX |
extinction |
|
EW |
Extinction in the wild |
|
CR+EN |
Endangered species |
|
CR |
Critically Endangered |
|
EN |
Endangered species |
|
VU |
Endangered species |
|
NT |
Near Threatened |
|
LC・○ |
Unranked |
|
DD |
Lack of information |
|
LP |
Endangered |
Creatures at Inokashira Park Zoo
Creatures at Inokashira Park Zoo
Stickleback
Pungitius sp.4
Stickleback
Pungitius sp.4
This is a type of fish called a "stickleback" that has spines on its back. Stickleback has 8 to 9 spines. It once lived in springs in Tokyo, including Inokashira Pond, but as the springs dried up and the water became polluted, it is thought to have become extinct in Tokyo in the 1960s. It now lives only in the upper reaches of the Motoarakawa River in Kumagaya City, Saitama Prefecture, and has been designated a natural monument by the prefecture.
| classification | Actinopterygii, Order Sticklebacks, Family Sticklebacks |
|---|---|
| English name | Stickleback |
| distribution | Japan (only the upper reaches of the Motoarakawa River in Kumagaya City, Saitama Prefecture) |
| Residence | Where there is cold spring water |
| Size |
Total length: Approximately 6 cm
|
| food | Algae on the bottom of the water |
| Red List |
IUCN: Not rated
Japan: CR (Critically Endangered) Tokyo: EX (Extinct) |