Pufferfish: Biology, Defense Mechanism, and Marine Adaptations #3746282 (License: Personal Use)

The image shows a fully inflated pufferfish (family Tetraodontidae), its body expanded with water or air and densely covered in erectile spines. Its large, expressive eye and mottled brown-and-cream coloration provide camouflage among coral reefs and sandy seabeds. These fish are renowned for containing tetrodotoxin, one of nature’s most potent neurotoxins, concentrated in their liver and ovaries.

Used on educational marine biology pages, aquarium websites, or wildlife conservation content; matches user intent for learning about fish defenses, toxicity, or ocean biodiversity.