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Clown Triggerfish

Shedd Aquarium/Brenna Hernandez

Shedd Aquarium

Shedd Aquarium

When threatened, a triggerfish dives into a hole or crevice in the reef, then wedges itself into the shelter by erecting the large dorsal spine on its head. The spine is locked into place by a second, smaller spine behind it. Another spine on the fish’s belly extends to help wedge the fish securely into its shelter.

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  • Title: Clown Triggerfish
  • Creator: Shedd Aquarium/Brenna Hernandez
  • Rights: Copyright Shedd Aquarium

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