Up for bid are a group of 1-year old Rhinogobius that I spawned in my fish room. They range from about 1.5 inches to over 2 inches in length. The larger males are starting to stake out territories. The fish are nonaggressive with each other, but would likely eat smaller fish or shrimp. I keep mine in 75 degree, hard water (ph 8.4) and feed them sinking pellets. Fun to watch and easy to keep