We bought some new fish today for the aquarium. Before you can put fish in your aquarium, you need to let is sit for a couple of days to make sure the water is conditioned correctly, the filter is working properly and the water temperature is stable between 72 and 80 degrees. So, today it was time to add fish to the water. A must for any aquarium is a Plecostomus. A plecostomus helps to keep the aquarium clean. They’re rather ugly, and can usually be found hanging on the side of the aquarium. I think they’re prehistoric looking. But they are easier to photograph than the speedy Neon Tetras.