Aquarium Ornaments, Fish Tank Decorations & Artificial Plants

Create a natural-looking scene or a colourful themed display with aquarium ornaments and fish tank decorations from The Tech Den Australia. Browse replica rocks, tree stumps, bridges, artificial plants, coral ornaments and character decorations, alongside betta resting accessories and ceramic hides.

Explore aquarium décor styles

Natural-look ornaments: rock formations, branches, logs, tree stumps and moss-effect designs.
Artificial plants and coral replicas: plastic plant packs, planted display ornaments and colourful coral shapes. These decorative replicas are distinct from live plants and corals.
Themed fish tank decorations: SpongeBob SquarePants, Jaws, skulls, fantasy figures, vehicles and steampunk designs.
Betta accessories and hides: leaf hammocks, floating lounges, tunnels and ceramic shelters.
Bubble and light features: selected aerating ornaments and LED designs; check whether an air pump or other equipment is required separately.

Choose decorations to suit your tank

Compare each ornament's dimensions with your aquarium's usable space, and check openings against the size of your fish. Confirm the intended freshwater, marine or terrarium application on the individual listing rather than assuming every item suits every setup. Follow the product instructions for preparation, placement and cleaning.

This collection also contains reptile hides, terrarium decorations, coral frag racks and GreenPleco plush toys. Choose these for their stated purpose; plush toys are display and gift items, not underwater aquarium ornaments.

Before ordering

Check the listing for materials, dimensions, included accessories and purchasing restrictions. Selected large tree-stump and coral ornaments are in-store pickup only, while some bulky items have additional delivery charges.