What is the black fin shark catfish?

Answer

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.

Q&A Related to "What is the black fin shark catfish?"
1. Establish an accurate diagnosis before embarking on a course of fin rot treatment. Symptoms of fin rot include frayed, ragged and split fins with a white edge or streaks of blood
http://www.ehow.com/how_8167891_treat-fin-shark-fi...
I think the black fin shark you are referring to is the Columbian Shark, since it is a catfish and is often called the "black fin shark" in pet stores. Here's a good shot
http://answers.yahoo.com/question/index?qid=201009...
About 20 feet long or more.
http://wiki.answers.com/Q/How_big_do_black_finned_...
The blacktip reef shark has a black dorsal fin.
http://www.chacha.com/question/what-type-of-shark-...
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