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142952
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Three-spined Stickleback Gasterosteus aculeatus Length 4-7cm
This ‘tiddler’ is a familiar resident of streams and brackish water, recognised at all times by the 3 dorsal spines; it is silvery for most of the year but, in the breeding season, the male acquires a red belly and bluish dorsal sheen.
This ‘tiddler’ is a familiar resident of streams and brackish water, recognised at all times by the 3 dorsal spines; it is silvery for most of the year but, in the breeding season, the male acquires a red belly and bluish dorsal sheen.

