Is a great compact little glass tank. May be a bit small for most fish. It is perfect for insects, spiders and the like. And the glass is clear and free of distortion. (I do a lot of macro photography. And due to the nature of most of my subjects… Ps… Bark Scorpions etc… And hence have to shoot them through the glass sides of the incloser. Plastic is a nightmare! Due to easly being scratched etc. Which show up like Christmas trees… When flash is used.) It would tho be an even better deal for the money. If a lid were included. Oh and these would also make great little terrariums. For carnivorous plants etc.