Roman coliseum cave (S) 5.7" Aquarium Ornament Decor Fish tank Arena Colosseum - Ornament is made from non-toxic plastic ma terial and makes an exciting ornament in any aquarium. - Offers the natural environment feeling. - Change your aquarium into a beautiful scenery . - It is vividly and color detailed to add lively and natural life to your tank. - It is great to decorate your aquarium all the time with minimum responsibility and maintenance. - They're are absolutely safe for fish and best of all, they won't die, rot or cause any algae problems. - It is suitable for salt and fresh water Measures approximately:5.7"x5.47"x2.52" (14.5X 13.9X 6.4cm)(L x W x H ) Weight:280g