Is this friend or foe?

[Chris@els]

Good day
I'm posting for someone
they found a "alien" in their freshwater aquarium
does anyone know what it might be?
thanks in advance

 

[Fishpony]

Damselfly larva, it will eat small fish and fry

 

[Chris@els]

thank you

 

[Hendre]

+1
Not great to have around small fish!

 

[MrsE88]

I get those in my pond. Kill it. Lol

 

[Deadliestviper7]

Leave it be, fish eat them.
I never could get any to eat small fish fry, but they like mosquito larvae and bloodworms!