enter image description here

This bug appeared in my fish tank,transparent 6 legged with 3 tail insect. Anyone able to identfy this, please help. Many thanks

  • 3
    $\begingroup$ Please add some more images, including a better close-up, some morphological details, your location, etc. $\endgroup$ – another 'Homo sapien' Mar 1 '17 at 13:38

This is a Damselfly, suborder Zygoptera. Together with the Anisoptera (true dragonflies) they belong to the order Odonata, usually also named dragonflies.

Damselflies are smaller and more slender then Dragonflies, both as larva and as adult, although there are exceptions (mostly tropical species).

It can be distinguished from mayflies by it's broad head and the broad, flat lamellae; the 3 'tails' as you call them.

Some beautiful pictures can be found here

| improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.