Great moment captured. I like the details and eye contact but the open mouth of the fish puts it over the top for me. I might remove the sheen on the bill. Keep them coming!
The thumbnails doesn´t made justice to this excelent image. The expression in the fish´s face is terrific and you did a very good exposure job. Neat BG and sharpness. I am not sure about the composition because I think that the lower part of the frame is a little bit distracting. I think that a cropping job at the bottom of the frame would improve the composition a lot.