Article · Wikipedia archive · Last revised Jun 9, 2026

Pacific mud eel

The Pacific mud eel is an eel in the family Heterenchelyidae. It was described by Richard Heinrich Rosenblatt and Ira Rubinoff in 1972. It is a tropical, marine eel which is known from the eastern central Pacific Ocean, including Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Panama, and Nicaragua. It dwells at a maximum depth of 17 metres, typically habituating muddy substrates in estuaries. It is able to survive in water with a low salt concentration. Males can reach a maximum total length of 47.2 centimetres. The eels' diet consists primarily of benthic gastropods and worms, and bivalves.

Last revised
Jun 9, 2026
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≈ 1 min
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Pacific mud eel
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Anguilliformes
Family: Heterenchelyidae
Genus: Pythonichthys
Species:
P. asodes
Binomial name
Pythonichthys asodes
Rosenblatt & Rubinoff, 1972

The Pacific mud eel1 (Pythonichthys asodes) is an eel in the family Heterenchelyidae (mud eels).2 It was described by Richard Heinrich Rosenblatt and Ira Rubinoff in 1972.2 It is a tropical, marine eel which is known from the eastern central Pacific Ocean, including Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Panama, and Nicaragua.3 It dwells at a maximum depth of 17 metres, typically habituating muddy substrates in estuaries. It is able to survive in water with a low salt concentration.3 Males can reach a maximum total length of 47.2 centimetres.2 The eels' diet consists primarily of benthic gastropods and worms, and bivalves.3

Due to its wide distribution, lack of threats and lack of observed population declines, the IUCN redlist currently lists the Pacific mud eel as Least Concern.3

References

References

  1. Common names for Pythonichthys asodes at www.fishbase.org.
  2. Pythonichthys asodes Deprecated link archived 2013-04-12 at archive.today at www.fishbase.org.
  3. Pythonichthys asodes at the IUCN redlist.