Above: Shown in the picture just above is a premium quality Columbian Shark.
As you can see, it has dark metallic silver with black fins and white trim on those fins, making it a very attractive catfish.
This fish was about 2.5" long and swimming in one of our aquariums, when one of us snapped this picture.
Origin: The parents of this Columbian Shark originally lived in the Pacific Ocean along the west coast of North and South America.
The adults swim far up into rapidly flowing rivers in South America to spawn.
Many of the young are caught, as they swim back down stream to the ocean and end up in aquariums throughout most of the world.
Maximum Size: In aquariums they can grow to be about 12" long, which is too big for most home aquariums.
So if you get one and take very good care of it with excellent water and premium foods, it will almost surely outgrow your aquarium, and you will have a very difficult time finding a big enough home for it.
Behaviors: This is a very active swimmer that doesn't seem too aggressive, but their mouths keep growing, and eventually they'll be big enough to eat most of the fish in most aquariums.
Compatibility: Some recommended tank mates include, Cichlids even the more aggressive ones, plus Plecostomus Catfish, Clown Loaches, Large Barbs, and many other medium and large size aquarium fish.
Click here to read more about compatible groups of pet fish.
Temperature: Columbian Sharks can live pretty well from about 70 to 80-degrees F., but they're probably most comfortable at about 75 to 78-degrees F.
Click here to learn about aquarium temperature, aquarium thermometers, and aquarium heaters.
Feeding: Premium Fish Food Flakes when small and Premium Pellet Food when larger.
Click here to learn more about and shop online for premium fish foods.
Water Conditions: Columbian Sharks seem to be tolerant of a wide range of water conditions. Probably a pH of about 7.8 with moderate hardness is best, when they are young.
Most water in the US seems to be OK, so it's probably best NOT to adjust the pH or the hardness of the water.
As they get older they need proportionately more marine salts in their water.
Eventually they need to live in marine water like the water in the Pacific Ocean, where their parents lived as adults.
Here in our facilities the water is hard and the pH is usually about 7.8. We ship them in this water.
Click here for a lot more information about aquarium water conditions.
Aquarium Size: When young and less than 3" long, it's probably best to house one in at least a 30-gallon tank, but bigger is better.
They'll soon need 50 to 60-gallon aquarium. Then an aquarium with 100, 150, 200, 250-gallons, and maybe bigger.
Decor: Columbian Shark do not need gravel, and a layer of gravel more than 1/4" thick will usually fill with bits of uneaten food that will contaminate the water.
Click here for more about aquarium gravel.
Live Plants are beautiful and improve the water quality, but Columbian Sharks need more marine salts in their water, as thy grow older, and those salts will soon kill the freshwater plants.
Click here for more about live Aquarium Plants.
Aquarium Filter: Bio-Wheel Filters are highly recommended. A Penguin 350B Filter in an aquarium with 30-gallons of water is OK, when they're small, and a Penguin 350B Filter is also the right size for a 30 to 60-gallon aquarium.
When Columbian Sharks grow to be 6" long they'll need to live in an aquarium with at least 75-gallons of water and have a couple of Penguin 350B Filters along the back edge of that aquarium.
The bigger aquariums will need proportionately more Penguin Filters.
Click here to learn more about aquarium filters.
The addition of Lava Rocks will keep nitrates in the ideal range.
Click here to learn more about using Lava Rocks in aquariums.
Life Span: Columbian Sharks live for many years and possibly 20-years or more with excellent water and premium food.
Gender: It's not easy to tell the males from the females, when they're young and sometimes, even as they mature.
As females mature they often fill with eggs and become plumper, which may be a clue to their gender.
Breeding: This fish spawns in the ocean. The males pick up the eggs in their mouths, and swim upstream in rivers in South America, where they release the fry.
As the fry swim back downstream, some are caught and shipped throughout the world for aquariums.
Popularity: In spite of the comments above about their eventual size, Columbian Sharks have been popular for many years.
We like to tell our customers, what we know about each type of fish, then let each customer decide which fish to buy as pets.
Names: The scientific name of the Columbian Catfish is Ariopsis seemanni.
This fish has several other common names like the White Tip Shark Catfish, Black Fin Shark, and many other names.
Variations: There are no variations that we know of now.
Click here for a lot more information about keeping and caring for Columbian Sharks, including a picture gallery.
We hope you've enjoyed reading these comments.
We have 380-aquariums with lots-and-lots of popular aquarium fish plus lots-and-lots of rare fish!
We consider ourselves to be the link between the world's best sources of fish and the world best customers. We love our work, and we are very responsible.
All of our fish are Premium Quality Fish from the best suppliers in the world. Our fish have better health, more energy and brighter colors, as you can see in our pictures on this website.
We also offer lots and lots of information about keeping pet fish, all from the knowledge of the Bailey Brothers, who have a combined total of 100+ years of experience as breeders, wholesalers, and retailers of pet fish!
Our fish and our customers are treated with the best of care, and we work energetically everyday to make sure every customer enjoys their new fishy friends.
When you purchase pet fish from us, you know you're receiving premium quality fish and premium quality service.
"Received my fish last night and was so pleased! They all arrived alive and appeared to be healthy.
"Once in the tank, they became very active and are now thriving in their new home.
"Beautiful fish, I asked for color and aquariumfish delivered. Processing and shipping was extremely quick."
Nevin and DrTom, the Bailey Brothers
This website is owned and operated by the Bailey Brothers, DrTom and Nevin, who've been together in the fish business for more than 50-years.
The Product Manager has been with the company for more than 35-years.
So we feel very confident that this is the fishiest crew anywhere.