Nowadays, I'm only keeping mix shrimps instead of separate strains of shrimps. They're doing fine. I keep them together with guppies , dwarf swordtails, Quintana atrizona, Phallichthys tico, platies and Heterandria formosa. Here are some pics in combination with Heterandria formosa in several tanks. These combinations work excellent with another. At my place these livebearers leave those shrimps completely alone.
