They have a lot, but they have too many variables: age, size, weight. genetics... there is no straight forward answer to your question.
Well the one i know has spikes is the porcupine i think porcupine fish but i know if there is anymore. :-]
Point their spikes out!
porcupine
A porcupine uses the spikes on its back to protect itself.
It's spikes
Hedgehog or porcupine.
Yes porcupine fish do have fur
Its spikes, called quills ; this defensive adaptation protects the docile porcupine from predators.
No, Sharks will not eat porcupine fish.
The color of the porcupine fish can range from olive to brown. This fish has a light underbelly and dark spots cover its entire body. A porcupine fish is a pufferfish.
by drinking river water and using it spikes to live
spikes big yellow teeth shrp claws