Columbian Shark

Ariopsis seemanni

Also known as: Colombian Shark, Tete Sea Catfish, Silver Tip Shark Catfish, Black Fin Shark

A shark-like sea catfish often sold as a freshwater fish, though adults need brackish to marine water.

Water

Brackish

Temperature

75–82°F

pH

7–8.5

Hardness

10–20 dGH

Max size

14 in

Min tank

125 gal

Temperament

Semi-aggressive

Social

Groups (3+)

Swim level

Mid-bottom

Diet

Carnivore

Care level

Advanced

Lifespan

10-15 years

Breeding

Mouthbrooder

Suitability

Kept but not recommended

Origin

Pacific coast of Central and South America

Grows over a foot long, needs a group, a huge tank, and rising salinity as it matures. It eats smaller fish. Its fin spines are venomous and can snag in nets, so handle with care. Not suited to typical home aquariums.