The juvenile iridescent shark (Pangasianodon hypophthalmus) is a young stage of a popular freshwater catfish known for its shimmering body and active behavior.
Scientific Name
Pangasianodon hypophthalmus
Habitat
Native to Southeast Asia, especially the Mekong and Chao Phraya rivers. Inhabits large rivers and flooded fields.
Conservation
Not endangered. Widely farmed for food and aquarium trade. Wild populations face threats from habitat changes and pollution.
Lifespan
Can live up to 20 years in optimal conditions.
Fun Fact
Despite being called a “shark,” it is actually a catfish and has no relation to true sharks.
Diet
Omnivorous – eats algae, insects, crustaceans, plant matter, and commercial pellets in captivity.
Average Size
Juveniles typically range from 3 to 6 inches (7–15 cm); adults can grow over 4 feet (130 cm).
Location / Placement info
Displayed in the Coastal Reef Exhibit, near the Ocean-View Tunnel
FAQ
What is the lifespan of an Iridescent Shark?
They can live up to 15–20 years in captivity with proper tank conditions.
What do juvenile Iridescent Sharks eat?
They are omnivorous, feeding on pellets, flakes, bloodworms, and vegetables.
Are juvenile Iridescent Sharks aggressive?
No, they are peaceful, but can get nervous and swim erratically if startled.
What is the ideal tank size?
For juveniles, 75 gallons is a minimum; adults need 250+ gallons due to their large size.
Do they need a specific environment?
Yes, they require calm waters, ample swimming space, soft substrate, and gentle lighting.
How big do Iridescent Sharks grow?
Juveniles are 2–4 inches, but adults can reach 3–4 feet (90–120 cm) in length.
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