Australian bull shark (Heterodontus portusjacksoni)
Australian bull shark (Heterodontus portusjacksoni) with a glance at her, or rather on her face that produces an even more sinister impression than the white or tiger sharks. However, the first impression is deceptive, because the unusual structure of the jaws of the predator only serves to catch prey like crabs and molluscs.
Found this representative of marine fauna along the coast of Australia except the Northern shelf. By the way, according to genetic studies, all Australian bull sharks are divided into two populations, occurring in different parts of the area.
Based on the range of the Australian bull sharks, it is easy to notice that it prefers to inhabit tropical marine waters. Most fish found at a depth of about 100 meters, where there are caves with a sandy bottom.The horned snout of the shark
From all kind of bullish shark described species is the largest. The adult male grows to a length of 105 cm, female 125 cm of the fish’s body varies from gray to light brown, with black stripes around the head and along the body, creating the impression of a shark in harness. On each of the two dorsal fins there on the thorn, which is not poisonous, and are especially noticeable in young specimens. Perhaps this feature explains the name of second fish is the horned shark.Fin with a spike
As already noted, the structure of the Australian the jaws of the bull shark is unusual. She has two types of teeth: sharp front to capture prey, and flat back for crushing shells and sinks. The basis of the diet sharks are sea urchins and stars, large gastropods, prawns, crabs and small fish, which it finds on the ocean floor.Jaws of the bull shark close up
Australian bull shark leads mainly nocturnal, becomes active and when a potential prey. Most of the time fish spend in same-sex groups, facing each other for a short time for reproduction in auguta-September.
After mating, the female searches for a suitable crack where lays an average of 12 spiral egg brown. Her care for the offspring ends (the males do not participate in the process of caring for offspring). From the eggs after 10-12 months hatch into young horned sharks.The horned shark egg
Cryptic coloration and secretive lifestyle allow Australian bull shark to avoid frequent encounters with enemies. Most often it becomes the prey of the great white shark and sea lion.
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