There are a few groups of freshwater eels inside the aquarium, and many of them are not real eels whatsoever! The preferred kinds are from an interesting team of snake-like fish that come with the tire-track, hearth, and spiny eels. There's two platy species available inside the hobby, but these https://smallfishtankonline.blogspot.com/2024/11/how-to-choose-best-sobo-aquarium-pump.html