Hi Darren. Violet ids right the photo isn't great, but it could be Tachysurus fulvidraco, Amur Catfish.
What size tank do you have it in, if it is the above catfish then they can grow to about 14" long and need a tank of around 300 litres (60x18x18inches). Do not house with other smaller fish as it will eat anything smaller than itself. They are a temperate catfish and should not be kept in tropical aquariums, top temp being around 24c.