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The iridescent shark, Pangasius sutchi, is not a real shark - it is a type of catfish that superficially resembles a shark. It is a fresh-water fish that can grow to over 4 feet long. The iridescent shark is a popular home aquarium fish, but needs a large tank.
The Izak catshark, Holohalaelurus regani, is also known as the Izak shark and the shy eye shark. This shark hides its eyes with is tail when it is caught. It has dark brown skin above, with lighter dots and lines. The belly is much lighter. The Izak shark grows to be up to 2 feet (61 cm) long. It has an anal fin, 5 gill slits, 2 dorsal fins, no fin spines, mouth behind the eyes, slit-like pupils, and nictitating eyelids. It is oviparous, laying eggs (3.5 by 1.5 cm) that were internally fertilized. The Izak catshark was named by Gilchrist in 1922. Classification: Order Carcharhiniformes (ground sharks), Family Scyliorhinidae (catsharks), Genus Holohalaelurus, Species H. regani.
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