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 Tokyo Sea Life Park
Creatures at Tokyo Sea Life Park
Splitfin Flashlightfish
Anomalops katoptron
Splitfin Flashlightfish
Anomalops katoptron
They live in groups in rocky areas of warm seas. During the day, they remain still in crevices and caves, and become active at night. They have Llama sized photophores below their eyes that emit a strong green light. It is thought that they use this light for communication among themselves, courtship, and to protect themselves from predators.
| classification | Splendid Alfonsino, Order Alfinei, Family Splitfin Flashlightfish |
|---|---|
| English name | Splitfin Flashlightfish |
| distribution | Western Pacific Ocean, south of Kominato, Chiba Prefecture |
| Residence | Reefs and caves |
| Size |
Total length: 15cm
|
| food | Small fish, crustaceans |
| Red List |
IUCN: LC (Least Concern)
- - |
Rotating light source
If you look at the glow of Splitfin Flashlightfish, you can see that the light is flickering. The light appears to turn on and off as the light organs under its eyes rotate. Also, the green light is not emitted by Splitfin Flashlightfish itself, but by bioluminescent bacteria that live symbiotically in the light organs.