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Butis koilomatodon  (Bleeker, 1849)

Mud sleeper
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Native range | All suitable habitat | Point map | Year 2100
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Butis koilomatodon   AquaMaps   Data sources: GBIF OBIS
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Image of Butis koilomatodon (Mud sleeper)
Butis koilomatodon
Picture by Sazima, I.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Eleotridae (Sleepers) > Butinae

Environment / Climate / Range Ecology

Marine; freshwater; brackish; demersal; amphidromous (Ref. 46888).   Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Eastern Atlantic: collected from Port Harcourt (Niger delta in Nigeria) (Ref. 7391, 57413), apparently introduced (Ref. 7050). Indo-Pacific: Delagoa Bay, Mozambique and Madagascar to China and Philippines.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 10.7 cm TL male/unsexed; (Ref. 57413)

Short description Morphology | Morphometrics

Dorsal spines (total): 7; Dorsal soft rays (total): 7-8; Anal spines: 1; Anal soft rays: 7 - 9. Diagnosis: 11-14 scales in predorsal series; 26-29 ctenoid scales in longitudinal series (including 1-2 scales on caudal fin base); 9-12 scales in rearward transverse series; 1st dorsal fin: VI; second dorsal fin: I,8 (rarely 7); anal fin: I,7-9 (usually 8); pectoral fins: 19-21; pelvics relatively long, their tips almost, or just reaching level of anus; caudal fin rounded, with 11-16 segmented rays; 1st gill arch with about 12 gill rakers (in total), that are narrow and spine-like (Ref. 57413). Dark brown, scales edged in dark brown; body with 4-5 oblique bands; anterior part of 1st dorsal fin dark, 2nd dorsal and caudal fin with alternating dark brown and white spots, anal and pelvic fins dusky to black, pectorals clear; females with more distinct bands and lighter fins (Ref. 5493). Coloration: Preserved specimens: 2-3 longitudinal series of small dark spots above midline of flanks; broad, dark, crossbar running from each dorsal fin base towards belly, bifurcating on flanks into separate bands; 2 narrower crossbars on caudal peduncle; a lunate band on base of caudal fin; dark pre- and suborbital bands on head, confluent below eye; dark spot behind eye and light horizontal band running to posterior of operculum; snout marbled; 3 dark crossbars on nape preceding a light area in front of 1st dorsal-fin base; ventral area of head speckled; both dorsal fins with a dark proximal band; 1st dorsal fin more or less entirely dark to distal margin; 2nd dorsal fin with dark distal margin; anal and pelvic fins black, except distal area of pelvic fins lighter; pectoral fins with a dark spot at base (edged red in life) and an upper, smaller, dark spot sometimes evident (Ref. 57413).

Biology     Glossary (e.g. epibenthic)

Inhabits rivers, estuaries (Ref. 4967) and mangrove creeks (Ref. 10812). Feeds on crustaceans and small fishes. Marketed fresh (Ref. 12693). Maximum size recorded in West Africa was 8.3 cm TL (Ref. 57413).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Distinct pairing (Ref. 205).

Main reference Upload your references | References | Coordinator | Collaborators

Miller, P.J. and P. Wongrat, 1990. Eleotridae. p. 952-957. In J. C. Quéro, J. C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 2. (Ref. 10812)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 115941)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries:
FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Estimates of some properties based on models

Preferred temperature (Ref. 115969): 24.8 - 29.1, mean 28.3 (based on 1224 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5156   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00977 (0.00405 - 0.02356), b=3.05 (2.84 - 3.26), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  4.0   ±0.66 se; Based on food items.
Resilience (Ref. 69278):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Low vulnerability (16 of 100) .
Price category (Ref. 80766):   Unknown.