1. The fish that can breathe out of water.
      Stonefish
      Lungfish

2. It is used to catch turtles in India. 
    They are tied to a line, released into the sea.
    when they attach themselves to a turtle, both are pulled in.
    Name the fish.
      Stonefish
      Suckerfish

3. They catch insects sitting on leaves.
    The fish swims just below the insect.
    Then it spits water straight up at the insect which falls into the water. 
      Archer fish
      Flying fish

4. They are born in freshwater rivers in Europe and North America.
     After several years they move into the sea and grow there for several years. Then they return to the same stream that they were born in, to spawn.
      Salmon
      Cuttlefish

5. The fish which is the most venomous found in the seas.
      Stonefish
      Eel

6. When threatened, this fish can inflate its body like a balloon.
       Puffer fish
      Pomfret

7. The primitive fish found in the Western Indian Ocean.
     It was thought to be extinct until a live one was discovered in 1938.
      Coelacanth
      Plaice

8. The only vertebrate whose blood does not contain haemoglobin.
      Ice fish
      Milkfish

9. If they are threatened, 
    they release a dark, inky cloud into the water to escape. 
   The black 'ink' was earlier used as sepia dye by artists.
      The Cuttlefish
      The Mandarin fish

10. It has a flap of skin attached to a long spine on top of their head.
       The flap looks like a piece of food and it is bioluminescent.
       This acts like a bait and the fish snaps up any fish which try to eat this 'food'. 
      Angler fish
      Hilsa

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Correct answers given below: