Vintage 50's California pottery fish serving dish

This is a really cool fish made by a California pottery in the 50's era. Possibly Catalina, Haldeman, or maybe even Metlox. I found colors that match all the above. No mark on the back, but they all used paper labels at one time. Pretty turquoise green with a foamy brown edging. Measures 14 1/8" x 19 3/4" and 2" deep. The clay under the glaze is a white color. The bottom of the dish is completely glazed also. Wonderful condition. There is a pin head size glaze pop/chip, thats how I could tell the clay color.