at the Lake Biwa Museum, Japan

Robin James Smith

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Image Gallery

The first instar of a freshwater ostracod. Click on the image for next one in the series.

Right side view of the first stage instar that hatches from the egg of Potamocypris sp. At this stage there are only three pairs of appendages, the antennules, antennae and mandibles. Despite its tiny size, the first stage of this group can swim quite well. The orange colour (said to be caused by remaining egg yolk) is lost in later stages and this species turns green. Length of specimen is about 0.1 mm. (Click on the image to view the next one in the series.)