Hynobius nigrescens
Silhouette: zoosnow · PhyloPic
In 3 days ~50% in a week ~80%
The Japanese black salamander (Hynobius nigrescens) is a species of salamander in the family Hynobiidae, endemic to Japan. Its natural habitats are temperate forests, temperate grassland, swamps, freshwater marshes, intermittent freshwater marshes, irrigated land, canals and ditches.
When the larva goes through metamorphosis its gills and fins are replaced with lungs and legs. As the salamander grows, many of its muscles are shifted or are created in order to account for its size and weight. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Nikko National Park | 🇯🇵 Japan |
More parks will be added in future updates.
Possible
About 20% of wildlife watchers report a Black Salamander sighting in Nikko National Park on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
April
In that month about 40% of wildlife watchers report a Black Salamander in Nikko National Park on a given day, against under 5% in June and September–March, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Black Salamander sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Nikko National Park, in our data
Nikko National Park is the only park on Wallace's Line with enough records to rate Black Salamander sightings: about 20% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Black Salamander is recorded against all the amphibians logged in Nikko National Park (10 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
