How quickly do Columbian Shark Cats grow?

Wow the answer above is SO lazy (Copied and pasted from here: http://www.fishlore.com/profile-columbianshark.htm )

Well the cat should last about 5 years before it gets too big.These catfish grow quickly when they are small.When they get larger , they grow at a slower rate.But ultimatly , if you want to keep this catfish for as long as possible , follow these tips.

A higher tank tamperature means they are more active , need more food and in general will have a shorter life. For a Colombian Shark Catfish , around 23° is great.

Also dont feed them too much. Feed them less if the temperature is 23° as they wont eat as much. Stuff like prawns and shrimp , and fish make these cats grow faster and fatter. So remember these things and you'll be fine!

larger the aquarium the faster it will grow

add info:-

Scientific Name : Hexanematichthys seemanni

Common Names : A very long list of common names: Silver Tipped Shark, Tete Sea Catfish, White Tip Shark Catfish, Black Fin Shark, Christian Catfish, Jordan's Catfish, West American Cat Shark

Care Level : Moderate, needs a very large tank as adults

Size : Anywhere from 10 - 20 inches (25-51 cm) and sometimes even larger!

pH : 7 - 8

Temperature : 75°F - 80°F (24°C - 27°C)

Water Hardness : 5° to 20° dH

Specific Gravity : 1.005 - 1.010, saltwater as adults (1.020 - 1.025)

Lifespan : 10 - 15 years or longer

Origin / Habitat : Wild caught specimens originate from Central America, Guatemala, South America and Southern Mexico. They are often found in coastal waters and brackish rivers.

Temperament / Behavior : Mostly peaceful but may eat smaller fish as it grows larger. Avoid keeping them with small fish such as neon tetras and guppies.

Breeding / Mating / Reproduction : Very difficult, not sure if it has been accomplished in an aquarium. Males are mouth brooders.

Tank Size : 75 gallon (284 liters) minimum for one, much larger for multiples. This fish needs a large tank not only for it's size, but because it is a fairly active swimmer.

Compatible Tank Mates : Fish that tolerate brackish water conditions. Scats, Monos, Targetfish. When this freshwater/brackish shark gets big enough, it will start to eat much smaller tankmates.

Fish Disease : Freshwater Fish Disease - Diagnose, Symptoms and Treatment

Diet / Fish Food : Being catfish, they are primarily scavengers. They will constantly be looking for bits and pieces on the bottom of the tank. Give them sinking shrimp pellets, catfish pellets, prepared sinking foods and supplement with live or frozen foods such as blood worms.

Tank Region : Sometimes middle areas, but mostly on the bottom.

Gender : Hard to determine by external features.

: Being catfish, they're in the main scavengers. they are going to continuously be searching for bits and products on the backside of the tank. provide them sinking shrimp pellets, catfish pellets, arranged sinking ingredients and supplement with stay or frozen ingredients inclusive of blood worms. Edit: you may desire to bypass back to the shop and tell the guy that he offered you the incorrect fish and spot what he says, make him sense stupid