Vintage coral reef and‎ angel fish oil painting

This is a vintage oil painting depicting 2 angel fish swimming through a coral reef. This piece measures 29" x 24". The main colors are turquoise and black. There is a lot of detail surrounding the coral reef area, the whole painting is very bright and vivid and interesting in it's simplicity with just the two angel fish swimming by. both the canvas and the frame are in excellent condition. the only flaw I see is that there is a black mark in the upper right of the painting that looks like it might not belong there. I'm sure that could be really fixed. This would be a great addition to any home.