Which fish will expand into a ball when it encounters danger? It's the puffer fish. Once it senses danger, it will expand into a spherical body and quickly enlarge its body to resist the enemy's attack. This breathtaking defensive behavior is why the puffer fish is a highly intelligent fish. manifestation.
puffer fish
lantern fish
Answer: puffer fish
Pufferfish are a kind of fish with a very special body structure. When they sense danger coming, their own defense mechanism will take effect. At this time, pufferfish will inflate themselves into a ball and use the method of growing their body to fend off predators. scare away.