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RockGarden Sculptured Lava Rock
$4.99 to $7.99
$3.99 to $6.39 save up to 20%
More options available
Penn Plax Hide-Away Stackable Stone Aquarium Ornament

$19.99
$15.99 save 20%
North American Pet Red Lava Rock

$4.99
$3.99 save 20%
North American Pet Red Shale Rock

$4.99
$3.99 save 20%
North American Pet Zebra Rock

$4.99
$3.99 save 20%
North American Pet Black Lava Rock

$4.99
$3.99 save 20%
RockGarden Sculpted Wonderstone

$19.99
$15.99 save 20%
Zoo Med Hermit Crab 'Growth' Shell, 2 Pack
$3.99
$2.99 save 25%
Penn Plax Hide-Away Stackable Stone Aquarium Ornaments

$19.99
$15.99 save 20%
North American Pet Wonderstone Rock
$4.99
$3.99 save 20%
Zoo Med Hermit Crab 'Growth' Shell, 1 Pack
$2.99 to $3.99
$2.24 to $2.99 save up to 25%
More options available
North American Pet Black Shale Rock

$4.99
$3.99 save 20%
Imagitarium Star Coral Aquatic Decor
$7.99
$6.39 save 20%

aquarium & fish tank rocks & coral

Shop for aquarium rocks and coral from Petco and build an authentic-looking habitat for your fish and other aquatic pets. Much like other aquarium ornaments, fish tank rocks and coral can provide your pets with substantial hideaways.

By stacking or arranging your aquarium rocks in a cove like structure, you can greatly improve your pet’s health by giving them a safe space to duck into whenever they feel vulnerable. If you have a smaller tank, or want an easy installation solution, there are many fish tank rocks that serve the same purpose thanks to their built-in holes and hide-away nooks.

You can mix and match aquarium rocks and coral to create a unique look for your fish tank. Because fish tank rocks come in different colors, you can easily complement the coral in your aquarium. If you have live varieties, you can also use the fish tank coral available to fill in gaps within your slow-growing patch. Replica aquarium coral can also be a vibrant and low-maintenance solution, if you’d rather focus on caring for your fish. Many pet parents opt for replica aquarium coral because it doesn’t require special lighting and allows them to consider more options when it comes to tank bulbs.

Each of the replica fish tank corals and rocks available at Petco are meticulously detailed, so you can count on their accurate and lifelike design. Some pet parents use aquarium rocks to create depth within a tank by staggering their placement. While others use them to create natural structures that are similar to what their pets would encounter in the wild. There are even pet parents who break out of the norm and decorate and add color to their freshwater aquariums with replica fish tank coral. Browse through Petco’s wide selection of aquarium rocks and coral and craft an underwater your pets will love.