They are all consumers, that is that they consume other organisms including plants and other animals.
fish
water
yeahbuddy
eaten by fish is that a habitat and niche
it will eat a fish
bobby floby
bobby floby
It eats fish
The seahorses niche is said to be secondary consumers classified as predatory fish. They eat small fish and are commonly found in marine habitats
Dolphins like fish. Any niche dealing with a fish will likely be welcomed by dolphins. They also welcome niches dealing with water.
fish ect.
The introduced fish species would not become an invasive species if the fish shares a niche with the native species.