Original Painting Signed & Dated ~ Tropical Fish ~ Sand Texture on Wood

Original one of a kind painting ~ 8 different tropical fish ~ a lot of work went into this piece ~ I believe they are a textured acrylic paint but I’m not 100% sure, has a sand type texture to the touch ~ signed and date 2013, the initials are either S B or R back words and B ~ good condition with a wire for hanging ~ measurements in pics