Answer:
![Asian Swamp Eel -
click to enlarge](https://webarchive.library.unt.edu/eot2008/20090510121726im_/http://fl.biology.usgs.gov/Nonindigenous_Species/Swamp_eel_FAQs/swampeel.jpg) Asian swamp eels may be confused with a
number of native animals, including the native American eel, as well as
several snake-like amphibians (e.g., sirens and amphiuma). The swamp eel has an
elongate or snake-like body with no noticeable scales or fins. The head is
relatively short and the teeth are small and not easily seen. The gill opening
forms a V shape on the lower throat area. The body and head are dark, sometimes
dark olive or brown above, but lighter, often light orange below. Some
individuals are brightly colored with yellow, black, and gold spots over a light
tan or almost-white background. The skin produces a thick mucous layer
making the eels difficult to hold.
This link is a video link of an Asian swamp eel.
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