#2188 · 🐟 fish
Mummichog
Fundulus heteroclitus
9 photos from iNaturalist (Creative Commons) · credits & licences
- 1. © Alex R · CC BY-NC 4.0
- 2. © Fish_man · CC BY-NC 4.0
- 3. © Emilio Concari · CC BY-NC 4.0
- 4. © epic2112 · CC BY-NC 4.0
- 5. © John C. · CC BY-NC 4.0
- 6. © cyric · CC BY-NC-SA 4.0
- 7. © Nick Tepper · CC BY-NC 4.0
- 8. © Luke Foster · CC BY-NC 4.0
- 9. © Department of Environment and Natural Resources · CC BY-NC 4.0
what is it?
The mummichog ( Fundulus heteroclitus ) is a small killifish found along the Atlantic coast of the United States and Canada. Also known as Atlantic killifish , mummies , gudgeons , and mud minnows , these fish inhabit brackish and coastal waters including estuaries and salt marshes. The species is noted for its hardiness and ability to tolerate highly variable salinity, temperature fluctuations from 6 to 35 °C (43 to 95 °F), very low oxygen levels (down to 1 mg/L), and heavily polluted ecosystems. As...
base stats
Bars compare against all animals on log scales: up to 300,000 Dutch and 600,000 worldwide sightings (the most-seen species), 150 t (blue whale), 30 m and 400 years (Greenland shark).
fun facts
- No confirmed wild sightings in the Netherlands on iNaturalist: you'd have to travel for this one.
- 6,212 observations worldwide on iNaturalist.
fact sheet
- English
- Mummichog
- Nederlands
- Mummichog
- scientific name
- Fundulus heteroclitus
- class
- Actinopterygii
- order
- Cyprinodontiformes
- family
- Fundulidae
- IUCN Red List
- LC · least concern
- sightings in NL
- 0
- sightings in Europe
- 24
- sightings worldwide
- 6,212
- GBIF records in NL
- 0
- weight
- —
- length
- —
- lifespan
- —
IUCN in Dutch: niet bedreigd. Blank means the sources don't say.
relatives· Fundulidae
Sources: iNaturalist taxon 58642, Wikidata Q939303, GBIF 5712056, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.