It is said that a Hyalella survives even higher water temperatures and prefers warm shallow water to deep water.
At the same time, however, the Hyalella can adapt to lower water temperatures. In a garden pond or home aquarium, Hyalella is probably doing better than Grammarus.
Can you please advise how to reliably recognize these two species?

Last edited by tourtis; 11/05/20 12:43 AM.