I have been trying to find info on this fish for 3 days thank you. The one i am looking at is about 6" long, Do you know how fast they grow and is a 180 gal big enough? They are asking 75$ canadian is this reasonable?

:D I have a 150gal a 55gal a 35gal and soon a 180gal. I have 5 types of cories, 2 stripped rapheals , 2 upside downs , 1 armoured hoplo ,2 farawellas , and 4 sailfin plecos. I found a cat fish in my lfs they call a Turushugui or Octoadus Niger(not 100 percent sure on spelling) and i can't find any ...