Grassy Hideaway Tunnel 5x3.5" Deco Replica Our Penn Plax Grass Hide-Away Tunnel is the perfect spot for fish to hide or to give birth Each side of the tunnel as an opening of about 1.5 in. across and high for fish to easily enter and exit The base is heavy and will hold the ornament in place within your aquarium Great for Mollies&#44; Guppies&#44; Platies&#44; Swordtails&#44; and Cichlids Size - 5 W X 3.5 H in.