To protect our animals and to ensure they get to our customers healthy, we will only ship orders with Nano Fish via UPS Next Day Air. The Red Tail Hillstream Loach (Gastromyzon species 'SK02') is a fairly newly discovered fish. What makes this fish extremely unique is its red tail and dorsal fin, which makes it standout on dark substrates and backgrounds. This fish is not commonly sold and we're extremely happy to be able to offer this rare fish to our customers. This species is known for its ability to thrive in fast-moving streams and provides a natural algae control in aquariums. With its captivating design and beneficial traits, this fish is a must-have for any aquatic enthusiast. The Red Tail Hillstream Loach, like other Hillstream Loaches are pretty easy to care as long as they are introduced to a mature, cycled tank. They can acclimate to a wide range of parameters.  The following are our water parameters we keep them at: Our Tank Water ParametersPH: 7.2 to 7.5GH: 7 to 8KH: 3 to 4TDS: 180 to 250Temp: 72 to 75 We feed them high-quality sinking pellets and high-quality flake food.