Silver Shark Catfish (Ariopsis seemanni) - Live Fish

Silver Shark Catfish (Ariopsis seemanni)
A shimmering swimmer with shark-like looks and catfish roots — a showstopper for large aquariums!

The Silver Shark Catfish, also known as the Colombian Shark Catfish, is a striking brackish-to-marine species that combines the sleek body of a shark with the whiskered charm of a catfish. Known for their fast, graceful swimming, metallic silver sheen, and tall dorsal fins, these active and social fish grow large and thrive best in mature, well-maintained systems. They’re a favorite for experienced aquarists seeking a bold and unusual tank centerpiece.

🔍 Quick Facts:

• Common Names: Silver Shark Catfish, Colombian Shark, Tete Sea Catfish

• Scientific Name: Ariopsis seemanni

• Origin: Central and South America (Pacific coastal rivers & estuaries)

• Size: Up to 18 inches in captivity

• Temperament: Peaceful but active and predatory toward small tankmates

• Lifespan: 10–15 years

• Care Level: Intermediate to Advanced

🏡 Ideal Aquarium Setup:

• Minimum Tank Size: 125+ gallons (grouping recommended)

• Temperature: 72–82°F (22–28°C)

• pH Range: 7.2–8.4

• Water Type: Brackish → Marine as they mature

• Tank Tips:

  • Start in brackish water (1.005–1.010 SG); move to marine (1.020–1.025 SG) as they age

  • Strong current and well-oxygenated water appreciated

  • Tight lid recommended — they’re excellent jumpers

  • Sand or smooth substrate to protect delicate barbels

  • Group with similar-sized brackish or marine fish

🍽️ Diet:
Carnivorous

• Sinking pellets (marine or catfish formulas)

• Frozen foods: shrimp, krill, bloodworms

• Occasional live foods (earthworms, feeder fish — only if quarantined)

• Will scavenge but needs a varied, protein-rich diet

🐣 Breeding Info:

• Not commonly bred in captivity

• Mouthbrooding species in the wild

• Requires full marine environment and complex cues — typically not practical for hobbyists

🌟 Fun Facts:

• Despite being called a “shark,” it’s a type of sea catfish, not a true shark

• Naturally migrates between fresh, brackish, and marine waters — juvenile to adult transitions

• Can be startlingly fast — loves open swimming space and needs room to roam

• Best kept in groups of 3+ for confidence and natural schooling behavior

💡 Pro Tip:
Avoid small tankmates — they will eventually become a snack! This fish does best with similarly sized or larger species in a specialized brackish or marine tank.

🌊 Upgrade your aquarium with power and grace — the Silver Shark Catfish is a captivating oddball that rewards advanced care with stunning movement and presence.

🛒 Limited availability — grab one before they swim off!