Nursery aquarium bug help …
I have a nursery tropical aquarium for raising infant fish but have just discovered a bug approx 1cm long. I have attached some (not best quality) images and hope you can assist in its identifiaction. I have searched the web and so far come up with nothing. Kindest regards
Darren Boxer, South Wales, UK

Hi Darren,
We are not sure if this is an aquatic Hemipteran, or an aquatic Naiad, the immature form of a Dragonfly or similar insect. We suspect it is a Naiad. Clearer photos would help. It was probably introduced on plant material. Both Hemipterans and Naiads will eat baby fish.

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