Monopterus boueti (Pellegrin, 1922)
Liberian swamp eel
photo by MNHN

Family:  Synbranchidae (Swamp-eels)
Max. size:  34 cm TL (male/unsexed)
Environment:  demersal; freshwater,
Distribution:  Africa: Sierra Leone and Monrovia, Liberia (Ref. 57291, 116049). Reported also from Côte d'Ivoire (Ref. 2828), but its identification is unclear as the specimen has clearly visible eyes (Ref. 116049).
Diagnosis:  Diagnosis: body naked, slender, elongated and cylindrical, ending in a very tapering point; the caudal part of the body makes less than one third of the total length; no trace of paired or unpaired fins; eye atrophied, deep-set under skin, practically invisible from the outside; conical teeth on jaws and palate; gill opening minute, reduced to a median ovate pore, surrounded with longitudinal skin folds; 4 branchiostegal rays; 3 branchial arches without branchial lamellae; lateral line present; vertebral count: 140-144 abdominal and 39-45 caudal (Ref. 57291). Colouration: uniformly dark (Ref. 57291).
Biology:  Contrary to what is suggested by its morphology, this species is not cavernicolous; it burrows in mud, never very far from the sea (Ref. 57291). The male guards and builds nest or burrow (Ref. 205).
IUCN Red List Status: Data deficient (DD); Date assessed: 30 November 2019 Ref. (130435)
Threat to humans:  harmless


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