Because here's another one with a slight different look. You have to look closely at the front to see, but the backs are very different.
Fish necklaces are available. Look out for the genuine 1950's articulated fish necklaces - they are so cute.
Brightly coloured vintage brooches are available in all sorts of fish designs. Tropical fish, large sea fish including sharks and eels (very popular on Chinese made jewellery) and a few by artistic license.
Wear brooches on a hat, hairband, clothing or a bag. They brighten up any outfit for just a few pounds. Wear fish or sea themed jewellery to work as a reminder of a holiday soon.