Some pufferfish, particularly marine species, produce a potent neurotoxin in their internal organs known as tetrodotoxin, found mainly in the ovary and liver. Are Pufferfish Poisonous or Dangerous in a Saltwater Aquarium? The fish has a valve, at the base of the mouth that it can open and close to retain the water or release it, once it feels secure.
#CUTE PUFFER FISH SKIN#
Its skin is also very elastic, and its spine is very flexible, being able to curve and follow the temporary new shape of the body. The process occurs with the fish swallowing a large amount of water that will be stored in the stomach, a very elastic organ, inflating like a bladder and leaving it in a very spherical shape, up to three times its original size. These teeth are specialized for breaking shells of mollusks and crustaceans. Puffers have BIG teeth they may have 2, 3, or 4 visible teeth (or plaques). They will bite your fingers and it will hurt.
Make sure you always know where your fingers are and where your puffer is, when you put your hand in the tank. You can also get them used to take some commercial foods, as well, to serve as staple rations, but it is important to continue to provide fresh mollusks as well. It is important to give them food they can chomp, to help keep their teeth from over-crowding, although many people also report that they will ‘find something to crush’ if not provided. In the home aquarium, it is best to feed them fresh shrimp, mollusks (in their shells), squid, krill, etc.
They have strong jaws and hard teeth that are used for crushing stony or shelled invertebrates. Nearly all Pufferfish Types are Omnivorous, eating most things they can fit in their mouths.
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