Forest Water Snake
Forest Water SnakeForest Water SnakeForest Water Snake

Forest Water Snake

Thamnosophis infrasignatus

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
20–30% · Possible
overall probability at Ranomafana National Park
10 Verified records at Ranomafana National Park
May Best month highest sighting rate
☀️ Diurnal When it's active during daytime hours (6am–6pm)

Thamnosophis infrasignatus, commonly known as the forest water snake, is a species of snake in the family Pseudoxyrhophiidae. It is endemic to Madagascar. Wikipedia →

20–30% of wildlife watchers report a Forest Water Snake sighting in Ranomafana National Park, based on 10 days of visitor records from GBIF citizen-science data.

Closest Relatives at Ranomafana National Park

Lateral Water Snake
LC Endemic

Lateral Water Snake

☀️ Diurnal Reptile

Thamnosophis lateralis

10–20% · With luck
Eastern Madagascar Water Snake
LC

Eastern Madagascar Water Snake

Reptile

Thamnosophis epistibes

Insufficient data
Ranomafana Big-headed Snake
LC

Ranomafana Big-headed Snake

🌅 Crepuscular Reptile

Compsophis laphystius

40–50% · Likely
Madagascar Cat-eyed Snake
LC Endemic

Madagascar Cat-eyed Snake

🌅 Crepuscular Reptile

Madagascarophis colubrinus

20–30% · Possible
Three-striped Ground Snake
LC

Three-striped Ground Snake

🌅 Crepuscular Reptile

Pseudoxyrhopus tritaeniatus

20–30% · Possible
Slender Smooth Snake
LC

Slender Smooth Snake

☀️ Diurnal Reptile

Liopholidophis rhadinaea

20–30% · With luck
Gold-collared Snake
LC

Gold-collared Snake

☀️ Diurnal Reptile

Liophidium rhodogaster

20–30% · With luck
White Banded Tree Snake
LC Endemic

White Banded Tree Snake

🌅 Crepuscular Reptile

Phisalixella arctifasciata

10–20% · With luck
Betsileo White-banded Tree Snake
LC

Betsileo White-banded Tree Snake

🌅 Crepuscular Reptile

Parastenophis betsileanus

Insufficient data
Bernier's Striped Snake
LC Endemic

Bernier's Striped Snake

☀️ Diurnal Reptile

Dromicodryas bernieri

Insufficient data
Eastern Rainforest Smooth Snake
LC

Eastern Rainforest Smooth Snake

Reptile

Liopholidophis dolicocercus

Insufficient data
White-lipped Smooth Snake
LC Endemic

White-lipped Smooth Snake

Reptile

Liophidium torquatum

Insufficient data

📅 Monthly Probability

20–30
Jan
5–10
Feb
10–20
Mar
30–40
Apr
50–60
May
<5
Jun
<5
Jul
5–10
Aug
<5
Sep
10–20
Oct
30–40
Nov
30–40
Dec

☀️ When They're Spotted

Most active during daytime hours (6am–6pm) · across all parks (global)

☀️Diurnal
☀️🌙🌙12am6am12pm6pm12am

Global Distribution

Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.

where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is)  ·  parks where it occurs — tap a pin for the sighting probability there

Parks Where Found

# Park Country Probability
1 Ranomafana National Park 🇲🇬 Madagascar
20–30%

More parks will be added in future updates.

Quick answers

What are the chances of seeing a Forest Water Snake in Ranomafana National Park?

About 24% of wildlife watchers report a Forest Water Snake sighting in Ranomafana National Park, based on 10 days of visitor records from GBIF citizen-science data.

When is the best time to see Forest Water Snake in Ranomafana National Park?

May has the highest sighting rate for Forest Water Snake in Ranomafana National Park in our monthly data.

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