@Crystal. There can certainly be "related niches". See this blog about Niche Relationships. The community will vote to see if this is a duplicate…but I can see how this one is a bit on the grey line. Ideally the first one proposed should get the thumbs up. You can vote the other one down (Insects and Amphibians) and indicate why. Suggest you include a comment that suggest that this focus on just Amphibians….or something to that effect. Others who are voting will then see your note. The power of community!