vvv
And to answer Snook's question in this post^^: the closest thing to an eel you can get for your tank is a spiny eel.
Some species that would work would be:
peacocks-Macrognathus siamensis
zigzags-M. circumcinctus
lesser spiny eels-M. aculeatus
But if you get a spiny eel, then it is very important that you test your water regularly and never let your parameters get any higher than 0ppm ammonia, 0ppm nitrites, and 20-40ppm nitrates. And with zigzags, it is extremely important that you do enough research to be able to easily tell them appart from the two other species of "zigzag", Mastacembelus armatus and M. favus, because these two species both exceed 2 feet in length.