Maybe you are scratching your head wondering how a shrimp could become a pet, but there are plenty of children and adults giving their thumbs up. Keeping a freshwater aquarium clean takes time, but did you know shrimp clean away algae or keep tropical fish parasite free? The tiger shrimp has unusual markings and stays on guard for multiplying algae, but has an appetite for fish food as well. Another invertebrate, the Crystal Red, is another favorite among buyers wanting a colorful tank. Unfortunately, fish like eating these algae eaters, so put them in a smaller tank separate from their freshwater counterparts for protection. Red Cherry shrimp may become even brighter depending on how you restrict their diet. As an extra bonus, when shopping among reliable eBay sellers, some vendors include helpful information such as a feeding and care guide for this species. While you get acquainted with your underwater friends, enjoy the vivid pops of color seen through clear glass courtesy of your pet shrimp.