CreatureData

Mud sleeper

Butis koilomatodon (Bleeker, 1849)

Status not recordedbony fish

The mud sleeper (Butis koilomatodon) is a species in the family Butidae, order Gobiiformes.

No freely licensed photo yet

Quick facts about the mud sleeper

Weight
Not recorded
Length
Not recorded
Lifespan
Not recorded
Main food
Not recorded
Habitat
Not recorded
Young per litter or clutch
Not recorded
Conservation status
Not recorded
Countries on record
Not recorded

Where does the mud sleeper live?

Not recorded

Where has it been introduced?

The Global Register of Introduced and Invasive Species lists the mud sleeper as introduced in 6 countries, and flagged as invasive in 1 of them.

  1. Brazilinvasive
  2. Cameroon
  3. Guinea
  4. Nigeria
  5. Panama
  6. Venezuela

Introduced means brought by people and now present; invasive means the country's checklist records an impact. A species can be native to one part of a country and introduced in another. Source: Global Register of Introduced and Invasive Species (CC BY 4.0).

Is the mud sleeper endangered?

No conservation assessment is recorded for this species in our sources. That is not the same as being safe: it has not been matched to an assessment.

How is the mud sleeper classified?

  1. kingdomAnimalia
  2. phylumChordata
  3. classTeleostei
  4. orderGobiiformes
  5. familyButidae
  6. genusButis
  7. SpeciesButis koilomatodon (Bleeker, 1849)

Synonyms Butis caperatus, Butis delagoensis, Eleotris caperatus, Eleotris delagoensis, Eleotris koilomatodon, Hypseleotris raji, Prionobutis koilomatodon, Prionobutis serrifrons, Prionobutis wardi

Other names and names in other languages (14)
  • Crested gudgeonEnglish
  • Crested sleeperEnglish
  • Marblecheek sleeperEnglish
  • Modder-slaperAfrikaans
  • DurmienteSpanish
  • タイワンノコギリハゼJapanese
  • PuntangMalay
  • Чешуеголовый бутисRussian
  • BufanlueaiThai
  • Cá Bóng Răng CưaVietnamese
  • 鋸脊塘鱧Chinese
  • ปลาบู่จากสั้นThai
  • ปลาบู่เกล็ดแข็งหัวสั้นThai
  • 花錐脊塘鱧Chinese

Catalogue of Life

Relatives of the mud sleeper

Other species in the same genus Butis.

CompareMud sleeper vs Crazy fishMud sleeper vs Ambon gudgeonMud sleeper vs Flathead sleeperMud sleeper vs Butis melanostigma

Common questions

Answered only where our data holds the answer.

Is the mud sleeper an invasive species?

In some places. The Global Register of Introduced and Invasive Species flags the mud sleeper as invasive in 1 country: Brazil. It lists it as introduced in 6 in all.

What kind of animal is the mud sleeper?

The mud sleeper (Butis koilomatodon) belongs to the family Butidae in the order Gobiiformes.

Sources and how to cite this page

Data as of 2026-11-13. How this page is put together.

Embed a card for this animal on your own site

Copy this code. The card shows the photo with its credit, key facts and a link back to this page.

Preview the card

APA

CreatureData. (2026). Mud sleeper (Butis koilomatodon). Retrieved from https://creaturedata.com/animals/mud-sleeper

MLA

“Mud sleeper (Butis koilomatodon).” CreatureData, 2026, https://creaturedata.com/animals/mud-sleeper.

BibTeX
@misc{mud_sleeper_2026,
  title = {Mud sleeper (Butis koilomatodon)},
  author = {{CreatureData}},
  year = {2026},
  url = {https://creaturedata.com/animals/mud-sleeper},
  note = {Data as of 2026-11-13}
}