Lee's Kritter Keeper for Fish feature snap-tight lids with airline access hole (except small size) and matching pedestal stand. All lids have hinged viewer/feeder windows and the large size has an attachment hole. Small size is an ideal home for Betta Splendens (Siamese fighting fish). Colors vary. Small: 4-1/2 D x 5-5/8 H. (.66 quart).