What is this creature?

[CRS]

Found this whilst trimming the moss back, it has very strange movement, its less shrimp like than the photos show.

It's very strange.

I have caught it and put it in a jug for now as i am not sure if it's safe to keep in the tank.

 

[OliveFish05]

Can’t you see it’s a mermaid?

In all seriousness though it looks like a dragonfly nymph

 

[CRS]

There's more of them!!

Eww, they're freaky!!

 

[OliveFish05]

There's more of them!!

Eww, they're freaky!!

Eeek. I am not sure if they are harmful or not… have you added any new plants recently?

 

[Rocky998]

They are definitely harmful. I have had some in my tank and they will eat small fish... These are damselfly nymphs and they are super hard to get out. How in the heck did you get that one out?

 

[Essjay]

I agree. They are carnivorous larvae and will eat any small fish they catch. I would remove all that you can find.

 

[betta4ever!]

Agree with the above. What fish do you have?

 

[CRS]

They are definitely harmful. I have had some in my tank and they will eat small fish... These are damselfly nymphs and they are super hard to get out. How in the heck did you get that one out?

It was on a large piece of moss that i cut off, managed to catch it in a small net.

There are rummy nose tetras and blue shrimp in the tank. If they're harmful i'll remove them.

 

[Rocky998]

It was on a large piece of moss that i cut off, managed to catch it in a small net.

There are rummy nose tetras and blue shrimp in the tank. If they're harmful i'll remove them.

Its not an if their harmful, its they are harmful and they have to get gone... Seriously they are insane monsters and I had to be violent to remove mine... It was that bad

 

[CRS]

Thanks, one went down the sink time to try and catch the other!

They're hiding in the moss, i bought some plants a couple of weeks ago i assume they came with the plants

 

[Rocky998]

Thanks, one went down the sink time to try and catch the other!

They're hiding in the moss, i bought some plants a couple of weeks ago i assume they came with the plants

Thats exactly where they came from most likely.

 

[Colin_T]

Baby dragonfly or damselfly. They are predators and eat small fish, shrimp, tadpoles or anything else they can catch. They also get eaten by bigger fish. Take them out and let them go in a pond or creek. If you don't have one nearby, put them outside in a bucket of dechlorinated water with some plants and let them turn into dragonflies or damselflies.

 

[Rocky998]

Or murder it

Baby dragonfly or damselfly. They are predators and eat small fish, shrimp, tadpoles or anything else they can catch. They also get eaten by bigger fish. Take them out and let them go in a pond or creek. If you don't have one nearby, put them outside in a bucket of dechlorinated water with some plants and let them turn into dragonflies or damselflies.

 

[betta4ever!]

Or murder it

No, let them live!

 

[Rocky998]

No, let them live!

They were in my tank and made a fuss about it... Die die die!