What is in my tank

[bolgerk]

These appeared overnight anyone know what they are

 

[GuppyBreeder180604]

well those look like either 1. a shrimp, 2. a giant parasite.
Can you get a higher resolution photo?

 

[Fish4dawin]

They look a bit like prawns lol. Possibly shrimp

 

[GuppyBreeder180604]

are they alive? is the tank fresh or saltwater?

 

[Naughts]