Bosmina longirostris is a type of crustacean in the genus Bosmina . It is often found in ponds , in lakes it occurs near the shore as well as in the pelagic and in the depths.
The Furca claws are located on a short extension of the back of the body. The extension has a number of slender spines, as does the base of the end claws. The body is compressed laterally and has a hump. The head is rounded. The rostrum is rounded. The lower, rear corner of the shell merges into a tip of different lengths, in front of which there is a bristle. The feeler of the first antenna is far away from the tip and is located under a triangular label. The "trunk" (the first antenna) looks as if it were articulated due to numerous transverse rings formed from small spines. Females reach a size of 250 to 700 micrometers.