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NAS - Nonindigenous Aquatic Species |
Common Name: spotfin spiny eel
Identification: Long, eel-like fish with a compressed tail and a row of small spines along the back in front a soft-rayed dorsal fin; pectoral and anal fins present; no pelvic fins; snout is extended into a proboscis with anterior nostrils at the side (Kottelat 2001); 4-5 dark round spots on dorsal fin.
Size: Up to 200 mm SL (Kottelat 2001)
Native Range:
Mekong basin in Laos, Thailand, Cambodia, and Vietnam; Chao Phraya basin (Kottelat 2001).
Nonindigenous Occurrences: C-111 Canal between water control structures S-18C and S-197 [Everglades region south of Homestead], Florida (P. Shafland, personal communication).
Ecology: Slow-moving or standing freshwater habitats.
Means of Introduction: Aquarium release.
Status: The eels are reproducing in this area but are limited from spread by salt water downstream but have access to other freshwater habitats to the north and west.
Impact of Introduction: Unknown.
Remarks:
Kottelat, M. 2001. Fishes of Laos. WHT Publications (Pte) Ltd., Sri Lanka. 198 pp.
Shafland, P. - Non-native Fish Lab, Florida Fish and Wildlife Conservation Commission, Boca Raton, FL.
Other Resources:
Spot-Finned Spiny Eel - Macrognathus siamensis
Author: Pam Fuller
Revision Date: 1/28/2005 Citation for this information:
Pam Fuller. 2009. Macrognathus siamensis. USGS Nonindigenous Aquatic Species Database, Gainesville, FL.
<http://nas.er.usgs.gov/queries/FactSheet.asp?speciesID=2261> Revision Date: 1/28/2005
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