ModsMegaquarium
Megaquarium mods
A mod changes the game itself. It needs something to load it, it may need other mods first, and it only works on the versions its author built it for.
1,287 mods, most downloaded first · newest update 12 Oct 2026
Animals888Fish715scenery138tanks108Sharks84Other animals79Extinct and Fantasy64Crustaceans57paints55Mammals46Others45Bugs/Invertebrates42plants39birds36Reptiles35Gameplay34Clams and corals30Rocks29Guest Facilities24Cetaceans21Custom Maps17Accessories16Shark16animal13Modpack11tutorial10
- Gulf Stream Aquaria - Lawnmower Blennyby RappyAdds the lawnmower blenny (Salarias fasciatus), a popular Indo-Pacific detritivore, to your aquarium. This fish unlocks at Rank 3. Credit to IrritatingFish for the base model used.1.3k downloadsupdated 3 y ago
- Large Tanks Packby 76561198842575853Collection of large-sized tanks to help better accomodate bigger animals1.3k downloadsupdated 8 mo ago
- Pelagica - Patagonian Toothfishby 1electronAdds the Patagonian Toothfish to your game. Although this fish originally appeared in a Polar Plunge mod, it really shouldn't have been there since it's not actually a polar species. However, it has been remade and rereleased as a side mod.1.3k downloadsupdated 5 y ago
- Thailand FF Endangered Packby 76561199056670115Thailand Endangered Pack including -Ambastaia sidthimunki, also known as The Chain botia, Ladderback loach, Pygmy loach, Chain loach or Dwarf loach -Betta simplex, also known as The Krabi mouth-brooding betta -Laubuka caeruleostigmata, also known as The Flying minnow, Flying barb, Siamese hatchet...1.3k downloadsupdated 5 y ago
- Pelagica - Maori Chief Rockcodby 1electronAdds the Maori Chief Rockcod (Notothenia angustata) to your game. Although it is a member of the genus Notothenia, it is a separate mod since it is not a polar species and therefore should not be part of Return to the Poles.1.3k downloadsupdated 5 y ago
- RickReptile rock background pack 1by rickreptileReptile Productions presents it's first rock backgrounds pack, it features plenty of rock in different variations so you can truly customize your tanks. featuring 9 different rocks, each having several variations, providing over 100+ objects to decorate your tanks with. Modders note: By downloadi...1.3k downloadsupdated 3 y ago
- Ambulocetus natansby Irritating FishYour prehistoric collection gets a little larger with the walking whale, Ambulocetus natans! Unlocked at rank 12, this large Eocene carnivore will make a great centerpeice to any paleo-aquarium. Just make sure you are equipped to handle it! It is quite fussy. Also included in this mod is a fantas...1.3k downloadsupdated 6 y ago
- Khaydar's Bazaar - Abzuquarium Sceneryby KhaydarAdds some content from Abzû. - 5 new paints - 12 new scenery - 1 fence Abzû IP and models belongs to Giant Squid.1.3k downloadsupdated 4 y ago
- RickReptile Mangrove Tanksby rickreptileReptile Productions presents mangrove tanks. These tanks are low and shallow, allowing new ways to showcase your animals. There are also unique transition tank that showcase two different elevations within 1 tank. HEADSUP: With how this game works the Transition tanks are not ideal for bottomdwel...1.3k downloadsupdated 22 mo ago
- BLUE - Stocky Anthiasby Irritating FishA nice little reef fish for your aquariums, the stocky anthias (Pseudanthias hypselosoma).1.3k downloadsupdated 4 y ago
- Pearl Stingrayby 76561199056670115Fontitrygon margaritella or also known as Pearl stingray. Thank to both DaLilFishie and IrritatingFish for helping me with some of the code.1.3k downloadsupdated 5 y ago
- Balvaro store Saltwater pack 1by balvaro21The tilefish it is a group of fishes which lives near the bottom of the sea.Some can reach considerable size and are subject of fishing but others have a size which made them interesting options for marine aquariums.This group sometimes called Sand tilefish have attractive color patterns.The prob...1.3k downloadsupdated 6 y ago
- Pelagica - Mango Angelfishby 1electronThis highly-anticipated fan-made modpack has finally been released! Mango trees are very important and provide habitat for the mangoes that grow on them, but I couldn't really replicate that so we have this instead. From Mango Angelfish to Mango Angelfish to Mango Angelfish, Amazing Mangoes (as I...1.3k downloadsupdated 5 y ago
- RickReptile Coral Pack 4by rickreptileRickReptile presents coral pack 4. This coral pack features many corals from the game Endless Ocean Luminous. 20+ different colors, most got several color options, providing over 100 new corals to use for your aquariums. Special Credit to Buffzoo with helping me with the models. Modders note: By...1.3k downloadsupdated 22 mo ago
- Starter Trio Pack 3by grosseberthaAdd 3 species for the start of your game, all are auto-unlock at lvl 1, the Berrys Bobtail Squid (Euprymna berryi), the Springeri Damselfish (Chrysiptera springeri) and the Kuekenthals Cleaner Shrimp (Lysmata kuekenthali).1.3k downloadsupdated 12 mo ago
- Nerdy Penguin Aquatics - Bayou Scenery Packby RealNerdguinAdds several Bayou themed scenery items. Included are logs, junk items, jetties, and even a run down shack. Models by Synty.1.3k downloadsupdated 3 y ago
- Wathers of Central Europeby RalofMod that adds fresh and salt water floara and fauna from middle of Europe Mod contains 2 types of diatom covered rocks (freshwater variant of live rock) 2 freshwater plants (yellow water-lily and pondweed) Northern pike (Esox lucius) European perch (Perca fluviatilis) European flounder (Platichth...1.3k downloadsupdated 2 y ago
- Po'ouliby Tenth ArchitectAdds the Po'ouli, an extinct honeycreeper, to your game, which will be available at level 6.1.3k downloadsupdated 5 y ago
- Malawi Protomelas Pack Iby 76561199125761610Add 3 Colorful Protomelas species to your Malawi-themed aquarium: Red Empress(Protomelas taeniolatus, unlocks at Rank 6), Turquoise Hap(Protomelas marginatus, unlocks at Rank 8) and Insignus Hap(Protomelas sp. 'spilonotus tanzania', unlocks at Rank 6). Credits to Flishster for base model.1.3k downloadsupdated 4 y ago
- Orange Skunk Clownfishby 76561199056670115Amphiprion sandaracinos or also known as the Orange Skunk Clownfish. Biggest of thanks to Flishster for their generousity allowing me to use their's models. Special thanks to hydro-guppy for the Japanese translation and 混沌邪恶萝厨人 for the Chinese translation!1.3k downloadsupdated 4 y ago
- Australian Rainbowfish Packby 76561198880010479This mod contains: Pacific Blue-eye (Pseudomugil signifer) Eastern Rainbowfish (Melanotaenia splendida splendida) McCulloch's Rainbowfish (Melanotaenia maccullochi) Crimsonspotted Rainbowfish (Melanotaenia duboulayi) Murray River Rainbowfish (Melanotaenia fluviatilis) Credit goes to Flishter for...1.3k downloadsupdated 9 mo ago
- Nerdy Penguin Aquatics - Substratesby RealNerdguinAdds several new substrates, textures by synty.1.3k downloadsupdated 8 mo ago
- Palaeoquarium - South American Spinosaursby WaterWitchIn celebration of the first year anniversary of the release of Spinosaurus, in collaboration with Phanerium and Project Artificialis, we are happy to announce two new spinosaurs for your Paleo-Aquariums: Oxalaia quilombensis and Irritator challengeri! Hopefully you have what it takes to house two...1.3k downloadsupdated 4 y ago
- Goldfish Packby 76561199057124724This mod adds some goldfish variants and a spawning mop scenery. All is breedable and can yield different patterns. Contents: Ranchu goldfish Oranda goldfish Pearlscale goldfish Ryukin goldfish Veiltail goldfish Spawning mop (scenery)1.3k downloadsupdated 4 y ago
- BLUE - Southern Pygmy Perchby Irritating FishWelcome this cute fish of Australia's backwaters and billabongs, the southern pygmy perch (Nannoperca australis)!1.3k downloadsupdated 4 y ago
- Khaydar's Bazaar - North Atlantic DeepWater Sharks 2 (cut content and add-ons)by KhaydarAdds 4 extra species to the North Atlantic Shark pack. Content that I couldn't finish for the shark week and some extra thrown on the middle. Species: Bigeye Sandtiger Shark (Odontaspis noronhai) Portuguese Dogfish (Centroscymnus coelolepis) Sharpnose Sevengill Shark (Heptranchias perlo) White Gh...1.3k downloadsupdated 2 y ago
- Malawi Aulonocara Pack Iby 76561199125761610Add 3 Aulonocara species to your Malawi-themed aquarium: Benga Peacock Cichlid(Aulonocara baenschi, unlocks at Rank 6), Euraka Red Peacock(Aulonocara jacobfreibergi , unlocks at Rank 7) and Blue Gold Peacock(Aulonocara korneliae, unlocks at Rank 8). Credits to Flishster for base model.1.3k downloadsupdated 4 y ago
- Kreisel Tank with Decorationby 76561199056670115Made Kreisel Tank compatible with placing decoration. And does nothing else1.3k downloadsupdated 3 y ago
- Extinct Crab Packby 76561199057124724This mod adds some extinct crabs species to your game. Contents: Tumidocarcinus (Tumidocarcinus giganteus) Pulalius (Pulalius vulgaris) Atergatis (Atergatis laddi) Eocarcinus (Eocarcinus praecursor) Avitelmessus (Avitelmessus grapsoideus) Galene (Galene granulifera) Zanthopsis (Zanthopsis dufouri...1.3k downloadsupdated 5 y ago
- Pelagica - Mountain Rainbowfishby 1electronAdds the Mountain Rainbowfish (Melanotaenia monticola) to your game.1.3k downloadsupdated 5 y ago
- Masked Triggerfishby 76561199056670115Sufflamen fraenatum or also known as the Bridled Triggerfish or Masked Triggerfish.1.3k downloadsupdated 5 y ago
- BLUE - Great White Sharkby Irritating FishAdd the famous great white shark to your aquarium! This model is based on a large female, hence the thickness. This model was commissioned by Buffzoo.1.3k downloadsupdated 3 y ago
- More Substratesby MjmannellaAdds default tank substrates as substrate paints for any compatible tank to use. Freshwater Frenzy requires for the dirt substrate while Deep Freeze is required for the gravel and deep sea substrates1.3k downloadsupdated 3 y ago
- Lieutenant tangby 76561199125761610Adds lieutenant tang (Acanthurus tennenti) to your aquarium! This species unlocks at Rank 7. Credits to Anubite and grossebertha for base model. Feel free to leave your comments.1.3k downloadsupdated 4 y ago
- Khaydar's bazaar - Mermaidby KhaydarWelcome to my bazaar, would you be interested on a mermaid for you aquariums? Yes a real mermaid, not fiji one. Is this ethical? I don't know, buy now to learn more. It's a hard animal to keep, unlock it at level 12. Note: They switch from vertical standing to horizontal swimming without animatio...1.3k downloadsupdated 7 y ago
- Sand Bar Sharkby Sharking AroundThe sandbar shark (Carcharhinus plumbeus) also known as the brown shark or thickskin shark, is a species of requiem shark, and part of the family Carcharhinidae, native to the Atlantic Ocean and the Indo-Pacific. It is distinguishable by its very high first dorsal fin and interdorsal ridge.1.3k downloadsupdated 4 y ago
- Brownbanded Bamboo Shark Packby 76561199056670115Chiloscyllium punctatum or also known as Brownbanded bamboo shark. This cute little walking shark will require caves and your attention to keeping it fed as a picky eater. But under the right condition your shark pup might just grow into an adult form.1.3k downloadsupdated 3 y ago
- BLUE - Okapiby Irritating FishWelcome the shy and reclusive African unicorn, the okapi (Okapia johnstoni), to your wildlife facilities! This creature requires a lot of space and plants, so make sure you have room to care for one! This mod requires the Enclosures mod, Megaterrarium, and Diverse Diets to function. Happy Holidays!1.2k downloadsupdated 5 y ago
- African Ocean Variety Packby 76561199056670115African Ocean Variety Pack including -Epinephelus malabaricus, also known as Blackspot rockcod, Estuary rockcod, Giant rock cod, Greasy grouper, Malabar rockcod, Morgan's cod, Speckled grouper, Malabar grouper or Malabar rockcod -Epinephelus coioides, also known as Brown-spotted rockcod, Estuary...1.2k downloadsupdated 5 y ago
- RickReptile rock background 3.0by rickreptileRickReptile presents rock background 3.0. Yet another way to decorate your tanks and easily the largest scenery mod ever for Megaquarium. In total this pack has over 30 rock models, each having 6 variations(1 bare and 5 filled with corals) offering in total over 180 variations, each model got bet...1.2k downloadsupdated 20 mo ago
- Australian Freshwater Pack - Part 2by 76561198880010479Adds 15 species from Australia's fresh waters to your game! This mod includes: Australian Longfin Eel (Anguilla reinhardtii) Barcoo Grunter (Scortum barcoo) Blue Stream-Goby (Sicyopterus lagocephalus) Cherabin (Macrobrachium rosenbergii) Desert Goby (Chlamydogobius eremius) Desert Rainbowfish (Me...1.2k downloadsupdated 10 mo ago
- European Eelby MjmannellaFarmed and overfished, this European's wild population is in a dire situation. Does you aquarium have what it takes to help save this rare species?1.2k downloadsupdated 3 y ago
- Scribbled Angelfishby 76561199125761610Add Scribbled Angelfish(Chaetodontoplus duboulayi) to your aquarium. Unlocks at Rank 10. Credits to grossebertha for base model.1.2k downloadsupdated 4 y ago
- Gulf Stream Aquaria - Tequila Splitfinby RappyAdds the Tequila splitfin (Zoogoneticus tequila), an easily kept but critically endangered goodeid, to your aquarium. This fish unlocks at Rank 4. Credit to IrritatingFish for the base model.1.2k downloadsupdated 3 y ago
- Arborispongiaby FlishsterAdds the Carboniferous sponge, Arborispongia to your game! Does not require Tenth Architect's Artificialis series, but I highly recommend you use it alongside this!1.2k downloadsupdated 6 y ago
- Mesophotic Reef Fish Packby 76561198880010479Live the life mesophotic with these deep reef fishes! This mod contains: Abe's Angelfish Central Pacific Anthias Cocos Keeling Angelfish Deepwater Fairywrasse Masuda's Hogfish Narcosis Angelfish Purple-head Sacura Twin Butterflyfish1.2k downloadsupdated 2 y ago
- Malawi Placidochromis Pack Iby 76561199125761610Add 3 peaceful Placidochromis species to your Malawi-themed aquarium: Deep Water Hap(Placidochromis electra), Jalo Reef Hap(Placidochromis sp. jalo reef) and Placidochromis sp. blue otter. Credits to Flishster for base model.1.2k downloadsupdated 4 y ago
- More Accurate Peacock Mantis Shrimpby 76561199057124724This mod makes it so that the Peacock Mantis Shrimp from the Architect's Collections dlc more accurate, from behavior to its model and animations.1.2k downloadsupdated 5 y ago
1.3k mods, most downloaded first. Each one has its own page here with what it needs to run and where its author publishes it; the files themselves stay with the author and are never re-hosted on this site.