Blue Line Shark is also known as an Iridescent Shark Catfish. In the wild, it can reach up to 130cm, although in captivity they are a little smaller, topping out at about 90cm. To keep one properly, you need a tank about 5m x 2m x 2m - that would hold 20,000 litres, or 5,283 US Gallons, if you prefer it like that.
If you do not have a tank that size, DO NOT KEEP THIS FISH. It would be cruel, it would lead to deformity in the fish. You wouldn't keep an elephant in a cupboard. Don't keep an iridescent in a small tank.
Red Parrots are a hybrid of Central American Cichlids. What other type of cichlid are you wanting to keep with it/them, and in what size tank?