Fish tank decorations
Fish tank decorations for sale on Ireland's largest auction and classifieds sites
Extra large castle - castle, fish - £79.99
Castle suitable any • Fish tank easy • Clean keep your - Free postage - New and Used
Castle suitable any • Fish tank easy • Clean keep your - Free postage - New and Used
Aquarium stone rock natural - aquarium, - £62.63
Dark grey rock • 20kg set select • Carefully selected pieces - Free postage - New and Used
Dark grey rock • 20kg set select • Carefully selected pieces - Free postage - New and Used
Fish tank rock - rock, natural - £38.99
Suitable all types • Aquariums dark colour • Combined irregular shape - Free postage - New and Used
Suitable all types • Aquariums dark colour • Combined irregular shape - Free postage - New and Used
Aquarium fish tank ornament - tank, - £14.98
Surface mountain has • Several interconnecting holes • Fish hide reducing - Free postage - New and Used
Surface mountain has • Several interconnecting holes • Fish hide reducing - Free postage - New and Used
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Large tall rock - mountain, fish - £29.95
Made from poly • Resin safe use • Fish plants - Free postage - New and Used
Made from poly • Resin safe use • Fish plants - Free postage - New and Used
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48 listings · from £2.91 · avg £16.69
⚠️ These listings were last updated more than 15 days ago.
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Browse 48 fish tank decorations listings currently in our index. Prices range from £2.91 to £79.99, with an average of £16.69. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about fish tank decorations →
Aquarium fish tank decor - aquarium, - £9.99
Material resin color • Picture show due • Light screen difference - Free postage - New and Used
Material resin color • Picture show due • Light screen difference - Free postage - New and Used
Aquarium fish tank ornament - aquarium, - £15.98
- Free postage - New and Used
- Free postage - New and Used
Fish tank ornament - tank, resin - £7.84
Flat bottom design • Just put slightly • Into water tank - Free postage - New and Used
Flat bottom design • Just put slightly • Into water tank - Free postage - New and Used
1pc fish tank ornament decor - 1pc, - £6.18
Change your aquarium • Into beautiful scenery • Vividly color detailed - Free postage - New and Used
Change your aquarium • Into beautiful scenery • Vividly color detailed - Free postage - New and Used
Fish tank plants quozuo 20pcs - quozuo, - £11.54
All aquarium plants • Pedestal fish tank • This set has - Free postage - New and Used
All aquarium plants • Pedestal fish tank • This set has - Free postage - New and Used
6pcs spongebob fish tank - 6pcs, - £5.74
I2.7c0dzpeozpeofp style box • Webkit tap highlight • Color transparent outline - Free postage - New and Used
I2.7c0dzpeozpeofp style box • Webkit tap highlight • Color transparent outline - Free postage - New and Used
Aquarium plants artificial - aquarium, - £10.97
Safe quality these • Plant decorations will • Neither fade nor - Free postage - New and Used
Safe quality these • Plant decorations will • Neither fade nor - Free postage - New and Used
Aquarium fish tank decor - aquarium, - £7.99
Material resin slight • Color variations may • Occur due lighting - Free postage - New and Used
Material resin slight • Color variations may • Occur due lighting - Free postage - New and Used
Aquarium rock fish tank - aquarium, - £3.29
Not affect water • Nor its cloudiness • Suitable all types - Free postage - New and Used
Not affect water • Nor its cloudiness • Suitable all types - Free postage - New and Used
Aquarium driftwood red moor - driftwood, - £14.99
Red moor wood • They also have • Biological function are - Free postage - New and Used
Red moor wood • They also have • Biological function are - Free postage - New and Used
Pack aquarium fish - pack, - £6.99
- Free postage - New and Used
- Free postage - New and Used
Artificial barrel cave - barrel, - £4.59
1pc fish tank • Landscaping artificial barrel • Decor unique design - Free postage - New and Used
1pc fish tank • Landscaping artificial barrel • Decor unique design - Free postage - New and Used
Aquarium oxygen pump - oxygen, - £2.91
Easy install lightweight • Simple place your • Aquarium adding charm - Free postage - New and Used
Easy install lightweight • Simple place your • Aquarium adding charm - Free postage - New and Used
Aquarium fish tank - aquarium, ornament - £12.06
Can provide beautiful • Decoration your aquarium • Also excellent hiding - Free postage - New and Used
Can provide beautiful • Decoration your aquarium • Also excellent hiding - Free postage - New and Used
Fish tank decorations - tank, - £10.97
Your lovely pet • Fish will very • Happy rest play - Free postage - New and Used
Your lovely pet • Fish will very • Happy rest play - Free postage - New and Used
Multifunctional aquarium - multifunctional, - £6.99
Material plastic - Free postage - New and Used
Material plastic - Free postage - New and Used
Grey natural moss - moss, effect - £18.98
Provides ideal hideaway • Multiple swim throughs • Grey natural moss - Free postage - New and Used
Provides ideal hideaway • Multiple swim throughs • Grey natural moss - Free postage - New and Used
Fish tank plants quozuo - fish, 20pcs - £12.50
All aquarium plants • Pedestal fish tank • Plant this set - Free postage - New and Used
All aquarium plants • Pedestal fish tank • Plant this set - Free postage - New and Used
Piece artificial aquarium - 10-piece, - £6.88
- Free postage - New and Used
- Free postage - New and Used
1pc aquarium hollow hole log - hollow, - £5.06
Provides sense natural • Surroundings turn your • Aquarium into beautiful - Free postage - New and Used
Provides sense natural • Surroundings turn your • Aquarium into beautiful - Free postage - New and Used
Glowing effect artificial - glowing, - £9.99
Artificial aquarium jellyfish • Decoration attaches included • Suction cup nylon - Free postage - New and Used
Artificial aquarium jellyfish • Decoration attaches included • Suction cup nylon - Free postage - New and Used
Cichlid stone cave aquarium - cichlid, - £6.74
Betta shrimp guppy • Snail will love • Suitable easy clean - Free postage - New and Used
Betta shrimp guppy • Snail will love • Suitable easy clean - Free postage - New and Used
1pc aquarium hollow - hollow, hole - £6.27
Provides sense natural • Surroundings turn your • Aquarium into beautiful - Free postage - New and Used
Provides sense natural • Surroundings turn your • Aquarium into beautiful - Free postage - New and Used
Fish tank stone aquarium - aquarium, rock - £9.99
Stones will require • Rinsing before they • Can placed aquarium - Free postage - New and Used
Stones will require • Rinsing before they • Can placed aquarium - Free postage - New and Used
Aquarium wood fish tank tree - aquarium, - £9.71
Aquarium vivarium terrarium • Beautiful unique pieces • Red moor wood - Free postage - New and Used
Aquarium vivarium terrarium • Beautiful unique pieces • Red moor wood - Free postage - New and Used
Aquarium rock natural fish - natural, - £46.43
Wood stone 15kg • Set select carefully • Selected pieces only - Free postage - New and Used
Wood stone 15kg • Set select carefully • Selected pieces only - Free postage - New and Used
Aquarium fish tank ornament - aquarium, - £19.98
13x8x21cm lxwxh - Free postage - New and Used
13x8x21cm lxwxh - Free postage - New and Used
Aquarium fish tank ornament - aquarium, - £19.36
Aquarium fish tank • Ornament thundercloud peak • Impressive piece ensure - Free postage - New and Used
Aquarium fish tank • Ornament thundercloud peak • Impressive piece ensure - Free postage - New and Used
Undersea theme aquarium - theme, - £5.76
Its vibrant colors • Detailed photos sure • Create life like - Free postage - New and Used
Its vibrant colors • Detailed photos sure • Create life like - Free postage - New and Used
Aquarium vivarium fish tank - vivarium, - £12.99
This great fish • Either swim through • Hide even breed - Free postage - New and Used
This great fish • Either swim through • Hide even breed - Free postage - New and Used
Artificial water grass plant - artificial, - £5.12
16pcs mixed artificial • Green plastic plant • Aquarium fish tank - Free postage - New and Used
16pcs mixed artificial • Green plastic plant • Aquarium fish tank - Free postage - New and Used
Aquarium plant real - aquarium, look - £9.49
Expect colour runs • Which can dull • Its appearance contaminate - Free postage - New and Used
Expect colour runs • Which can dull • Its appearance contaminate - Free postage - New and Used
Extra large helicopter - large, - £45.15
Suitable any aquarium • Has plenty holes • Fish swim out - Free postage - New and Used
Suitable any aquarium • Has plenty holes • Fish swim out - Free postage - New and Used
Mountain aquatic rock aquarium - mountain, - £8.99
Aquarium length suitable • Stones should rinsed • Before placing them - Free postage - New and Used
Aquarium length suitable • Stones should rinsed • Before placing them - Free postage - New and Used
Aquarium fish tank landscaping - fish, - £15.99
Material resin quantity • Due light screen • Difference item color - Free postage - New and Used
Material resin quantity • Due light screen • Difference item color - Free postage - New and Used
Aquarium fish tank ornament - aquarium, - £9.58
14x4x4cm lxwxh 25x11x10cm - Free postage - New and Used
14x4x4cm lxwxh 25x11x10cm - Free postage - New and Used
Vivid cartoon diver floating - cartoon, - £13.99
Adorable diver decorations • Transform your aquarium • Into enchanting undersea - Free postage - New and Used
Adorable diver decorations • Transform your aquarium • Into enchanting undersea - Free postage - New and Used
Small fish broken barrel decor - small, - £10.61
Good gallon larger • Fish tanks included • Components aquarium decorations - Free postage - New and Used
Good gallon larger • Fish tanks included • Components aquarium decorations - Free postage - New and Used
Extra large galleon ship - extra, - £79.95
Both halves together • Keep your decoration • Looking its best - Free postage - New and Used
Both halves together • Keep your decoration • Looking its best - Free postage - New and Used
Swell aquarium decoration - aquarium, - £5.94
Rounded ridged leaves • Artificial hydrocotyle are • Highly detailed add - Free postage - New and Used
Rounded ridged leaves • Artificial hydrocotyle are • Highly detailed add - Free postage - New and Used
Crashed fighter plane - crashed, wreck - £18.98
Suitable hide catfish • Bottom dwelling fish • Multiple swim through - Free postage - New and Used
Suitable hide catfish • Bottom dwelling fish • Multiple swim through - Free postage - New and Used
Fish tank decorations - fish, - £14.99
- Free postage - New and Used
- Free postage - New and Used
Mixed artificial green - mixed, - £5.95
Provides beautiful decoration • Your aquarium year • Excellent hiding place - Free postage - New and Used
Provides beautiful decoration • Your aquarium year • Excellent hiding place - Free postage - New and Used
Try this: fluval aquariums | glass tanks | lava rock | betta fish tanks | aquarium equipment | saltwater tank | freshwater tropical fish | large marine fish tanks | sump refugium | aquarium glass
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Everything you need to know about fish tank decorations
Whether you are looking for a brand-new or second-hand fish tank decorations, eBay offers one of the largest selections available online. With 48 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at £2.91, while premium listings can reach £79.99 — giving you a wide budget spread to work with. The average price of £16.69 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.