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The poison is produced by several types of bacteria obtained from the fish's diet. [11] As a result of these three defenses, porcupinefish have few predators, though adults are sometimes preyed upon by sharks and orcas. Juveniles are also preyed on by Lysiosquillina maculata, tuna, and dolphins. [5]
The long-spine porcupine fish is an omnivore that feeds on mollusks, sea urchins, hermit crabs, snails, and crabs during its active phase at night. [5] They use their beak combined with plates on the roof of their mouths to crush their prey such as mollusks and sea urchins that would otherwise be indigestible.
The Black-blotched porcupinefish is a medium-sized fish which grows up to 65 cm (26 in), but the average size most likely to be observed is 45 cm (18 in). [1] Its body is elongated with a spherical head with big round protruding eyes and a large mouth that is rarely closed.
Interesting Facts for Adults. 11. If you cut down a cactus in Arizona, it can result in a class 4 felony and up to 25 years in prison. ... 126. Fish can cough to clean their gills from dirt ...
The spot-fin porcupinefish is a medium-sized fish which grows up to 91 cm, but the average size mostly observed is 40 cm. [2] Its body is elongated with a spherical head with big round protruding eyes, and a large mouth which is rarely closed.
The nasal organ of adults sits in an open, pitted cup which in juveniles is a tentacle with two openings. The teeth are fused into a parrot like beak with no frontal groove and the mouth is large. The fins lack spines and there are no pelvic fins , the dorsal fin has 12-14 rays, the anal fin has 11-14 rays, the caudal fin has 10 rays and there ...
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Like true pufferfishes of the related family Tetraodontidae, porcupinefishes can inflate themselves. Once inflated, a porcupinefish's erected spines stand perpendicular to the skin, whereupon they then pose a major difficulty to their predators: a large porcupinefish that is fully inflated can choke a shark to death.