Sorry, perhaps you didnt realize "algae-eating shrimp" is a term for MANY types of shrimp. Could be amano shrimp (Caridina Japonica), ghost shrimp (Palaemonetes sp.) or a red cherry shrimp (Neocaridina sp.)...or something else. Perhaps you can google those & let us know; there is a big difference in size, temperament & care.