Q:

What is the black fin shark catfish?

A:

The black fin shark is another name for the Columbian shark, a catfish of the Ariidae family with a high fin and long whiskers. Very popular in aquariums, the fish is native to the warm, tropical coastal and river waters around Central and South America.

The fish is often between 2 and 4 inches when purchased, and it grows to lengths of 10 to 20 inches in larger tanks. More active than other aquarium catfish, the Columbian shark prefers an environment with at least some saltwater, as they live in both fresh and saltwater conditions in the wild at various times. They may be fed bloodworms and sinking catfish pellets, and they also survive on scraps and algae found at the bottom of the tank.

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