A new animal every day

Today · Thursday 29 October 2026

A slender, striped four-eyed fish lies in shallow water on sand, its bulging eyes raised on top of its head.
Photo: Sidnei Dantas · CC BY-SA 4.0 · iNaturalist · Our Instagram Reel of this photo is shared under CC BY-SA 4.0.

Picked by voters

Four-eyed fish

Each of its two eyes is split into a top half and a bottom half, so it can see above and below the water at the same time.

Lives in
MangrovesMuddy river mouths, mudflats and mangrove forests from Trinidad to the mouth of the Amazon
More about the four-eyed fishScientific name, size and Red List status
Scientific name
Anableps anableps
Size
Up to 30 cm long
IUCN Red List
Least concern

Not threatened at the moment, according to the IUCN Red List. See the assessment

Fact source: California Academy of Sciences

Up next · you choose

Ten animals are waiting. Which one comes first?

Sign up to see them and vote for the one you want to meet next. Every morning the leader becomes the next day’s animal, here and on Instagram.

Sign up to vote

Missing an animal?Suggest one

This week

Every animal so far
  1. Mon 26Upside-down jellyfish
  2. Tue 27Boxer crab
  3. Wed 28Axolotl
  4. Thu 29Four-eyed fishToday
  5. Fri 30Tomorrow’s animalin 21 h 30 min
  6. Sat 31
  7. Sun 1

Why Animall

People can’t care about animals they have never heard of.

Scientists still discover thousands of new animal species every year, while many others are disappearing because of habitat loss and climate change. Some die out before anyone has described them.

10,000+

new animal species are described every year.

University of Arizona, 2025

86%

of species on Earth, and 91% in the ocean, have not been described yet.

Mora et al., 2011

73%

average drop in monitored wildlife populations between 1970 and 2020.

WWF Living Planet Report, 2024