Fish
Definition: A cold-blooded vertebrate that lives in water and breathes mainly through gills. Most fish have fins and scales.
More about fish
The clownfish lives among the stinging tentacles of sea anemones, a well-known example of mutualism.
Definition: A cold-blooded vertebrate that lives in water and breathes mainly through gills. Most fish have fins and scales.
The clownfish lives among the stinging tentacles of sea anemones, a well-known example of mutualism.