Marine fish
Marine fish for sale on Ireland's largest auction and classifieds sites
Marine macro algae - , dragons - £14.01
Marine macro algae • Dragons breath this • Adds touch colour - Free postage - New and Used
Marine macro algae • Dragons breath this • Adds touch colour - Free postage - New and Used
Marine macro algae halimeda - marine, - £10.80
Product rooted marine • Macro algae specifically • Originating from united - Free postage - New and Used
Product rooted marine • Macro algae specifically • Originating from united - Free postage - New and Used
Aquarium fish transport - fish, - £28.99
Strong clear polythene • Bags are puncture • Proof safe your - Free postage - New and Used
Strong clear polythene • Bags are puncture • Proof safe your - Free postage - New and Used
Marine aquarium live rock - £15.00
Marine aquarium live • Rock rubble various • Sizes but mainly - Free postage - New and Used
Marine aquarium live • Rock rubble various • Sizes but mainly - Free postage - New and Used
Looking for more marine fish?
Search eBay live — fresh results filtered for the best value, updated every hour.
Marine macroalgae frag macro - macroalgae, - £9.99
Have many most • Popular macroalgae such • Aschaetomorpha chaeto andcaulerpa - Free postage - New and Used
Have many most • Popular macroalgae such • Aschaetomorpha chaeto andcaulerpa - Free postage - New and Used
📊
48 listings · from £0.99 · avg £37.06
⚠️ These listings were last updated more than 23 days ago.
Search for fresh listings
Browse 48 marine fish listings currently in our index. Prices range from £0.99 to £279.99, with an average of £37.06. 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 marine fish →
Caulerpa cylindracea red - caulerpa, - £17.00
Ideal nano tanks • Botryocladia commonly known • Red grape macroalgae - Free postage - New and Used
Ideal nano tanks • Botryocladia commonly known • Red grape macroalgae - Free postage - New and Used
Marine macro algae halymenia - marine, algae, - £17.59
Marine macro algae • Halymenia durvillei dragons • Breath rare - Free postage - New and Used
Marine macro algae • Halymenia durvillei dragons • Breath rare - Free postage - New and Used
Mengenal caulerpa racemosa - caulerpa, - £14.01
Product mengenal caulerpa • Racemosa type live • Plant used aquariums - Free postage - New and Used
Product mengenal caulerpa • Racemosa type live • Plant used aquariums - Free postage - New and Used
Marine collagen peptides - marine, | - £9.99
Purest pure micro • Hydrolysed halal collagen • Peptides powder perfection - Free postage - New and Used
Purest pure micro • Hydrolysed halal collagen • Peptides powder perfection - Free postage - New and Used
Marine fish collagen powder - fish, - £89.99
Marine collagen powder • Hydrolysed peptides type • Rich source bioavailable - Free postage - New and Used
Marine collagen powder • Hydrolysed peptides type • Rich source bioavailable - Free postage - New and Used
Marine collagen capsules anti - marine, - £4.29
Marine collagen 400mg • Suggested that from • Your mid 20s - Free postage - New and Used
Marine collagen 400mg • Suggested that from • Your mid 20s - Free postage - New and Used
Instant ocean marine - instant, - £269.99
Such have huge • Wealth experience online • Trading present list - Free postage - New and Used
Such have huge • Wealth experience online • Trading present list - Free postage - New and Used
Marine macro algae - £17.25
Also grow all • Our species dedicated • Aquaria from cuttings - Free postage - New and Used
Also grow all • Our species dedicated • Aquaria from cuttings - Free postage - New and Used
Marine collagen powder 10000mg - collagen, - £22.95
Marine collagen powder • Introducing applied nutrition • 10000 exciting addition - Free postage - New and Used
Marine collagen powder • Introducing applied nutrition • 10000 exciting addition - Free postage - New and Used
Marine fish collagen powder - fish, - £25.99
Marine collagen powder • Hydrolysed peptides type • Rich source bioavailable - Free postage - New and Used
Marine collagen powder • Hydrolysed peptides type • Rich source bioavailable - Free postage - New and Used
Caulerpa brachypus marine - caulerpa, - £4.95
Caulerpa brachypus macroalgae • Which great nitrate • Phosphate removal marine - Free postage - New and Used
Caulerpa brachypus macroalgae • Which great nitrate • Phosphate removal marine - Free postage - New and Used
Atm colony marine nitrifying - marine, - £89.99
Atm colony marine • Nitrifying bacteria available • Aquarium fish blue - Free postage - New and Used
Atm colony marine • Nitrifying bacteria available • Aquarium fish blue - Free postage - New and Used
Red ogo marine macro algae - ogo, - £20.00
Red ogo gracilaria • Parvispora attractive hawaiian • Macro algae found - Free postage - New and Used
Red ogo gracilaria • Parvispora attractive hawaiian • Macro algae found - Free postage - New and Used
Marine flakes fish - flakes, food - £0.99
Give your saltwater • Aquarium inhabitants complete • Nutrition they need - Free postage - New and Used
Give your saltwater • Aquarium inhabitants complete • Nutrition they need - Free postage - New and Used
Herons marine pellets - herons, - £0.99
Attributes improves colour • Growth digestion immune • System betaine 1920 - Free postage - New and Used
Attributes improves colour • Growth digestion immune • System betaine 1920 - Free postage - New and Used
Bcuk frozen bloodworm - frozen, - £83.99
Bcuk frozen bloodworm • High quality natural • Food source suitable - Free postage - New and Used
Bcuk frozen bloodworm • High quality natural • Food source suitable - Free postage - New and Used
Marine collagen 1000mg - (fish), - £33.99
Tablet provides 1000mg • Marine collagen 20mg • Found skin hair - Free postage - New and Used
Tablet provides 1000mg • Marine collagen 20mg • Found skin hair - Free postage - New and Used
Instant ocean marine salt - ocean, - £57.95
Instant ocean synthetic • Sea salt 20kg • 10kg such have - Free postage - New and Used
Instant ocean synthetic • Sea salt 20kg • 10kg such have - Free postage - New and Used
Collagen powder pure marine - collagen, - £9.99
Darker collagen more • Likely higher impurities • Retained pure hydrolysed - Free postage - New and Used
Darker collagen more • Likely higher impurities • Retained pure hydrolysed - Free postage - New and Used
Hobby natural hermit - hobby, crab - £8.99
Snail shells natural • Decoration ideal housing • Hermit crabs hobby - Free postage - New and Used
Snail shells natural • Decoration ideal housing • Hermit crabs hobby - Free postage - New and Used
Marine collagen peptides fish - marine, - £9.99
Darker collagen more • Likely higher impurities • Retained pure hydrolysed - Free postage - New and Used
Darker collagen more • Likely higher impurities • Retained pure hydrolysed - Free postage - New and Used
Aquascape epoxy grey or - d-d, - £7.48
Has been • Aquascape two part • Epoxy putty that - Free postage - New and Used
Has been • Aquascape two part • Epoxy putty that - Free postage - New and Used
Marine macro algae halymenia - marine, algae, - £22.50
Also grow all • Our species dedicated • Aquaria from cuttings - Free postage - New and Used
Also grow all • Our species dedicated • Aquaria from cuttings - Free postage - New and Used
Extra large acrylic - acrylic, fish - £74.99
Extra large acrylic • Fish acclimation box • Provides spacious environment - Free postage - New and Used
Extra large acrylic • Fish acclimation box • Provides spacious environment - Free postage - New and Used
Crushed coral shell - crushed, - £35.99
Crushed coral natural • Buffer will help • Water 8.2 8.3 - Free postage - New and Used
Crushed coral natural • Buffer will help • Water 8.2 8.3 - Free postage - New and Used
Black corrugated flexible - flexible, pond - £4.95
High quality resistant • Material perfect better • Flow rates preventing - Free postage - New and Used
High quality resistant • Material perfect better • Flow rates preventing - Free postage - New and Used
Rare marine macro - rare, - £25.66
Highly sought after • Species not algae • Have constantly available - Free postage - New and Used
Highly sought after • Species not algae • Have constantly available - Free postage - New and Used
Ocean nutrition prime reef - ocean, - £8.99
Made from blend • Premium seafood ingredients • Including salmon plankton - Free postage - New and Used
Made from blend • Premium seafood ingredients • Including salmon plankton - Free postage - New and Used
Salifert test kit - salifert, - £12.89
Salifert profi test • Kits 100 200 • Tests - Free postage - New and Used
Salifert profi test • Kits 100 200 • Tests - Free postage - New and Used
Marine collagen - (fish), - £7.99
Collagen found skin • Hair nails other • Connective tissues body - Free postage - New and Used
Collagen found skin • Hair nails other • Connective tissues body - Free postage - New and Used
Marine filter food coral - filter, - £23.99
Marine snow invert • Coral food reef • Zoo phyto plankton - Free postage - New and Used
Marine snow invert • Coral food reef • Zoo phyto plankton - Free postage - New and Used
Instant ocean aquarium salt - salt, - £3.99
Instant ocean aquatic • Salt suitable use • Tonic freshwater aquariums - Free postage - New and Used
Instant ocean aquatic • Salt suitable use • Tonic freshwater aquariums - Free postage - New and Used
1000ml live marine - 1000ml, - £12.99
Why adz tetraselmis • Shelf life refrigerate • Arrival shake daily - Free postage - New and Used
Why adz tetraselmis • Shelf life refrigerate • Arrival shake daily - Free postage - New and Used
Jebao marine reef aquarium - jebao, - £48.99
Feed mode disables • Pump minutes fluval • Cycle aquarium filter - Free postage - New and Used
Feed mode disables • Pump minutes fluval • Cycle aquarium filter - Free postage - New and Used
Stage di reverse - 4, & - £42.99
Tulsion 115 mixed • Bed resin allows • Total ionisation polishing - Free postage - New and Used
Tulsion 115 mixed • Bed resin allows • Total ionisation polishing - Free postage - New and Used
Marine macro algae - ,, halymenia - £22.50
Cutting from colony • Shown photographs also • Grow all our - Free postage - New and Used
Cutting from colony • Shown photographs also • Grow all our - Free postage - New and Used
Instant ocean marine salt - instant, - £279.99
Instant ocean • 20kg boxes 2kg • Salt dechlorinated water - Free postage - New and Used
Instant ocean • 20kg boxes 2kg • Salt dechlorinated water - Free postage - New and Used
Marine macro algae - £32.00
Also grow all • Our species dedicated • Aquaria from cuttings - Free postage - New and Used
Also grow all • Our species dedicated • Aquaria from cuttings - Free postage - New and Used
Black corrugated flexible pond - flexible, - £148.34
Tough yet flexible • Maintains its shape • Even when bent - Free postage - New and Used
Tough yet flexible • Maintains its shape • Even when bent - Free postage - New and Used
Marine macro algae - ,, hypnea - £52.70
This sale frag • Blue hypnea pannosa • See second photo - Free postage - New and Used
This sale frag • Blue hypnea pannosa • See second photo - Free postage - New and Used
Egg crate for - crate, - £2.99
Finest filters egg • Crate supplied convenient • Sized 30cm 15cm - Free postage - New and Used
Finest filters egg • Crate supplied convenient • Sized 30cm 15cm - Free postage - New and Used
Macro algae mix - macro, . - £6.52
Chaeto caulerpa mini • This product mix • Two types macro - Free postage - New and Used
Chaeto caulerpa mini • This product mix • Two types macro - Free postage - New and Used
Seachem reef dip - dip, coral - £9.99
Effective against bacteria • Fungus protozoans safe • Use both stony - Free postage - New and Used
Effective against bacteria • Fungus protozoans safe • Use both stony - Free postage - New and Used
Try this: 6ft fish tank | wooden vivarium | bow front fish tank | cube aquarium | baby biorb | eheim | marine aquarium live rock | pond air stones | 80 litre fish tank | aquarium 4ft
Shop by budget
Everything you need to know about marine fish
Whether you are looking for a brand-new or second-hand marine fish, 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 £0.99, while premium listings can reach £279.99 — giving you a wide budget spread to work with. The average price of £37.06 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.