"Gill Passman" wrote in message
.. .
Elaine T wrote:

[snip]


According to the faqs on this site they don't bite or sting:-

http://www.dragonflysoc.org.uk/frameset.htm?home&home

I also read that they lay the eggs singly but fly past multiple times to
lay the eggs in the same area. They also spend a long time in the larvae
stage (around 6 months) so conceivably your two could have been from the
same batch and there might be more.

Seems to be some reasonable info in this faq

Gill

Gill: No they don't bite or sting as adults, but the larvae (nymphs) do
have mighty pinchers and according to that same site:
http://www.dragonflysoc.org.uk/faq.htm#feeding

"The larvae, which live in water, eat almost anything living that is smaller
than themselves. The larger dragonfly larvae are known to catch and eat
small fish or fry. Usually they eat bloodworms or other aquatic insect
larvae."

Elaine: Have you introduced any new plants or driftwood to the tank
recently? if so, that may be your source if the eggs were on whatever it
was.