3. What are the main features
of fish associated to the
habitat where they live?

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
Fish are all animals and thus
have a hydrodynamic
body suitable to under water,
without and with fins. habitat
conditions the respiration too.