Wednesday, March 18, 2015
Water flea
This rotund little water flea with a long snout, which is a species called Chydorus sphaericus, turned up in a moorland pool in Weardale but its common in ponds and ditches everywhere. The appearance of water flea species can vary quite a lot, since some can grow extra protective spines on their carapace if they detect the presence of a lot of predatory midge larvae in the water, while others show seasonal changes in shape.
