If you want to make some living creatures in Little Alchemy 2, you need to make Fish first. You could combine Aquarium, Carbon Dioxide, Fishing Rod, Flying Fish, Mermaid, Piranha, Seahorse, Shark, Starfish, and Swordfish. There are lots of ways to make Fish, and we have figured 8 ways from easiest to hardest. Of course you need at least Life and Water, check out the detailed walkthrough and try it yourself.
Fire + Earth = Lava
Lava + Earth = Volcano
Water + Water = Puddle
Water + Puddle = Pond
Water + Pond = Lake
Lake + Lake = Sea
Earth + Sea = Primordial Soup
Volcano + Primordial Soup = Life
Method 1: Animal + Water
Earth + Earth = Land
Land + Life = Animal
Animal + Water = Fish
Method 2: Egg + Water
Fire + Life = Phoenix
Phoenix + Phoenix = Egg
Egg + Water = Fish
Method 3: Animal + Lake
Earth + Earth = Land
Land + Life = Animal
Animal + Lake = Fish
Method 4: Animal + Sea
Earth + Earth = Land
Land + Life = Animal
Animal + Sea = Fish
Method 5: Egg + Lake
Fire + Life = Phoenix
Phoenix + Phoenix = Egg
Egg + Lake = Fish
Method 6: Egg + Sea
Fire + Life = Phoenix
Phoenix + Phoenix = Egg
Egg + Sea = Fish
Method 7: Ocean + Animal
Water + Sea = Ocean
Earth + Earth = Land
Land + Life = Animal
Ocean + Animal = Fish
Method 8: Egg + Ocean
Water + Sea = Ocean
Fire + Life = Phoenix
Phoenix + Phoenix = Egg
Egg + Ocean = Fish