There Are several teams of freshwater eels from the aquarium, and several of them aren't legitimate eels in any way! The most popular forms are from an interesting group of snake-like fish which include the tire-track, fire, and spiny eels. The European sea sturgeons obtained recognition in the 19th century https://aquariumshops.tech.blog/2024/10/18/5-quick-hacks-of-professional-pond-cleaning/