Barbs are energetic fish that college in teams of at least 5 and cannot be retained with slow or weak tank mates as they are often very reckless. The eu sea sturgeon is a species of fish present in the waters of Europe and Asia. It’s mentioned as critically endangered, https://www.mediafire.com/file/m3s6kou1uq3tvi5/How_to_Enhance_Your_Fish_Pond.pdf/file