Help needed: ID this bug!

Hi,

we just found this nasty-looking bug in our heavily planted NPT (substrate: potting soil + gravel) and would like to know what it is: it has six legs, brown, seems to move in the water by "jumping". I removed one yesterday and another one this morning while trimming my plants. They are afraid of anything moving toward them and seem to live in our Limnophila sessiliflora (Dwarf Ambulia). The tank currently has tetra neons and snails and is 2 months old.

I put a picture in the post too. Any idea about what it is and how to get rid of it?

Thanks,
Bart