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
- Tetraodontidae Trio Packby grosseberthaAdd 3 new tetraodontidae to your game, Ornate Cowfish (Aracana ornata) Leopard Toby Puffer (Canthigaster leoparda) Ornage Saddle Fugu (Takifugu ocellatus)3.3k downloadsupdated 6 y ago
- Grouper Trio Pack 2by grosseberthaAdd 3 new Groupers to your game, the Harlequin Hind (Cephalopholis polleni), the Eastern Blue Devil (Paraplesiops bleekeri) and the Masked Grouper (Gracila albomarginata).3.3k downloadsupdated 6 y ago
- Butterflyfish Trio Pack 1by grosseberthaAdd 3 new butterflyfish to your game, the Blackback Butterflyfish (Chaetodon melannotus), the Pearlscale Butterflyfish(Chaetodon xanthurus) and the Hooded Butterflyfish (Chaetodon larvatus)3.3k downloadsupdated 6 y ago
- Freshwater moray eelby grosseberthaadd the freshwater moray eel to you'r game, the Gymnothorax polyuranodon .3.3k downloadsupdated 5 y ago
- Goby Trio Pack 2by grosseberthaAdd 3 gobies to your game, the Flaming Prawn Goby (Discordipinna griessingeri), the Purple Firefish (Nemateleotris decora) and the Diamond Goby (Valenciennea puellaris).3.3k downloadsupdated 6 y ago
- Arabian Red Sea Packby grosseberthaAdd 5 new Red Sea species to your game, the Peppered Butterflyfish (Chaetodon guttatissimus), the Suez Fusilier (Caesio suevica), the Reticulate Whipray (Himantura uarnak), the Ring Tailed Cardinalfish (Ostorhinchus aureus) and the Yellow Eyes Sweeper (pempheris flavicycla marisrubi)3.3k downloadsupdated 6 y ago
- Fish for dinner packby grosseberthaI present the fish for dinner pack, appetizing fish (lovely fish, sorry missclick) for your medium and large tanks ! composed of saithe, haddock and alaska pollock.3.2k downloadsupdated 6 y ago
- Tank Backgroundsby HarryLMMThis mod adds 3D backgrounds which you can fit to the back of the tank.3.2k downloadsupdated 7 y ago
- B.A.D. Laboratories Reinforced Tankby nightmare6445Here at B.A.D. Labs we discovered that we were going to need larger and more durable tanks than those currently available. We have designed our new reinforced tank to hold even the largest of creatures to ensure the safety of your staff, customer, and the animals. Our tank capacity ranges from 5,...3.2k downloadsupdated 7 y ago
- Longiman Sharkby grosseberthaAdd the Longiman Shark to your Game (carcharhinus longimanus).3.2k downloadsupdated 6 y ago
- Khaydar's Bazaar - Crocodilians of the New Worldby KhaydarCrocodilians of the New World add a total of 10 new crocodiles, caimans and alligators to your game. Every single species of crocodilians from the Americas are featured with the exception of the broad snouted caiman, as H.A.A.I already did this one. Species list - American Alligator - American Cr...3.2k downloadsupdated 3 y ago
- Tall Sunken Tanks Rebuiltby stlnegril9This mod revives some unpublished game models as Tall Sunken Tanks Rebuilt. Includes tall version of Lagoon, U, Chicago, Chicago-Internal, and Mega Tanks. Note the models are in the existing game but are not currently used. The tanks are deeper and much, much taller than existing tanks. Will requ...3.2k downloadsupdated 7 y ago
- H.A.A.I. - Tomato Clownfishby AnubiteWe are pleased to see you choose Hippocampus Aquatic Animal Import for your animal needs. Hippocampus Aquatic Animal Import brings you the newest species for your aquarium! All our animals are quarantined before they are brought into the buyers facility. We only import animals that are currently...3.2k downloadsupdated 6 y ago
- Artificialis - Mosasaur Collectionby Tenth ArchitectOur third clade based pack focuses on the Cretaceous Squamata members that had specialized in marine predation, the mosasaurs. The main focus are members of the mosasaurs present in the Niobrara formation with a couple exceptions. Only the most prestigious aquariums will be able to house these an...3.2k downloadsupdated 4 y ago
- Phanerium - Dunkleosteusby SynchroLightAdds two species of Dunkleosteus to your game, the largest and most well known Placoderm fish. Dunkleosteus, due to its immense spacial requirements, is unlocked at Level 12 through Science research.3.2k downloadsupdated 5 y ago
- Caribbean Reef Squidby FeelTheDangoAdds the Caribbean Reef Squid, Sepioteuthis sepioidea, to your game. A tropical cephalopod that lives in small schools. It can be unlocked at rank 8. Este mod está totalmente traducido al español.3.2k downloadsupdated 6 y ago
- Pseudanthias pack 2by grosseberthaI am happy to propose you the 2nd pack of pseudanthias composed of, Olive Anthias (Pseudanthias olivaceus), Aurora Anthias (Pseudanthias calloura) and the Red Cheeked Fairy Basslet (Pseudanthias hutchii).3.2k downloadsupdated 6 y ago
- Goblin Sharkby nightmare6445Add the Goblin Shark to your game. Can't take credit for the models I got them from zoo tycoon 2 and edited and animated them for Megaquarium.3.2k downloadsupdated 7 y ago
- OJ Squeezers need orangesby Twice CircledThis mod makes the OJ Squeezer need a supply of oranges to make you work a little harder for its sweet profit margins. It works just like the gift shop items where your staff need to take refill boxes from a supply box in order to refill the dispensers. This is a good example of a mod which repla...3.2k downloadsupdated 7 y ago
- Freshwater Shark Trio Pack 2by grosseberthaAdd 3 species commonly called Shark from Freshwater, the Redfin Bala Shark (Cyclocheilichthys janthochir), the Iridescent Shark (Pangasianodon hypophthalmus) and the Red Flying Fox (Epalzeorhynchos kalopterus)3.2k downloadsupdated 5 y ago
- Hogfish Trio Pack 1by grosseberthaAdd 3 Hogfish to your game, The Hogfish (Lachnolaimus maximus), The Spanish Hogfish (Bodianus rufus) and the Mexican Hogfish (Bodianus diplotaenia).3.2k downloadsupdated 6 y ago
- Donut Land Tankby stlnegril9This mod adds Land Area in the middle of Donut Shaped Platform Feeding tank. Guests get extra prestige for the great views and central island. Has Land capacity for animals requiring it. Can serve as a connection to 4 areas of your aquarium.3.2k downloadsupdated 6 y ago
- Marbled Hatchetfishby grosseberthaI am happy to propose you the marbled hatchetfish (carnegiella strigata).3.2k downloadsupdated 6 y ago
- Japanese Angel Sharkby 76561198880010479Adds the Japanese Angel Shark to your game.3.1k downloadsupdated 6 y ago
- Snowflake eelby grosseberthaadd the Snowflake Eel(Echidna nebulosa) to your game .3.1k downloadsupdated 5 y ago
- Picturesque dragonetby grosseberthaadd the picturesque dragonet (synchiropus picturatus) to you'r game .3.1k downloadsupdated 6 y ago
- Mata Mataby grosseberthaI am happy to propose you the Mata mata (chelus fimbriata). #TwoYearAnniversary3.1k downloadsupdated 6 y ago
- Pseudanthias pack 1by grosseberthaI am happy to propose you a pack of pseudanthias composed of: two spot basslet(pseudanthias bimaculatus)(male), pseudanthias taeniatus(red see anthias)(male) and the pseudanthias fasciatus(one striped anthias).3.1k downloadsupdated 6 y ago
- Snowy grouperby grosseberthaI am happy to propose you the snowy grouper (hyporthodus niveatus).3.1k downloadsupdated 6 y ago
- Pleco Trio Pack 1by grosseberthaAdd 3 plecos to your game, the Royal Pleco L190 (Panaque nigrolineatus), the Sultan Pleco L264 (Leporacanthicus joselimai) and the Green Phantom Pleco L200(Hemiancistrus subviridis).3.1k downloadsupdated 5 y ago
- Jellyfish Duo Pack 1by grossebertha! WARNING ! READ BEFORE PLAY WITH THIS MOD : - when you have download the mod from the workshop, launch the game and scroll down this mod at the bottom of the mod list and re-launch the game. ( if you don't make that the top of the cauliflower is going to look weird, because if the mod is recent...3.1k downloadsupdated 6 y ago
- Donut Viewing Platform Tank - 3 Wideby stlnegril9This mod adds bosjesman's Donut Tank idea to a 3-wide Platform Feeding tank.3.1k downloadsupdated 6 y ago
- Six bar angelfishby grosseberthaAdds the Six Bar Angelfish (Pomacanthus sexstriatus) into your game.3.1k downloadsupdated 6 y ago
- Scalloped Hammerheadby grosseberthaAdd the Scalloped Hammerhead Shark to your game (Sphyrna lewini).3.1k downloadsupdated 5 y ago
- Damsel Pack 1by grosseberthaadd the damsel pack composed of rollands damsel (chrysiptera rollandi), the surge damsel (chrysiptera brownriggii), and the talbots damsel (chrysiptera talboti).3.1k downloadsupdated 6 y ago
- Sand for Kreisel Tankby SvealynFlat sand floor for the Kreisel Tank This mod replaces the standard blue floor of the Kreisel tank. Additionally, the water flow system is more grey than the original blue one. The mod can be used together with the "Modern Theming" mod as long as this mod is placed higher in the mod order in your...3.1k downloadsupdated 7 y ago
- Australian Sealife Pack Part 4by 76561198880010479Adds 18 more species from down under for your aquariums! Includes: Australian Angel Shark (Squatina australis), Black Banded Seaperch (Hypoplectrodes nigroruber), Blue Blubber Jelly (Catostylus mosaicus), Bluespotted Maskray (Neotrygon kuhlii), Eastern Hulafish (Trachinops taeniatus), Eastern Tal...3.1k downloadsupdated 8 mo ago
- Australian Sealife Pack Part 2by 76561198880010479Even more species from down under for your aquariums! Adds the Crimson-Banded Wrasse, Senator Wrasse, Globefish, Horseshoe Leatherjacket, White's Seahorse, Port Jackson Shark and Gummy Shark to your game! Credit goes to Flishter for the Port Jackson Shark model.3.1k downloadsupdated 3 y ago
- H.A.A.I. - Needlespine Coral Gobyby AnubiteWe are pleased to see you choose Hippocampus Aquatic Animal Import for your animal needs. Hippocampus Aquatic Animal Import brings you the newest species for your aquarium! All our animals are quarantined before they are brought into the buyers facility. We only import animals that are currently...3.1k downloadsupdated 6 y ago
- Ray duo pack 1by grosseberthaI am happy to propose you the pink manta ray and the crossback stingaree (Urolophus cruciatus).3.1k downloadsupdated 6 y ago
- Surgeonfish Trio Pack 1by grosseberthaAdd 3 new surgeonfish to your game, the Lavender Tang (Acanthurus nigrofuscus), Yellowtail Surgeonfish (Prionurus punctatus) and the Spotted Unicornfish (Naso brevirostris).3.1k downloadsupdated 6 y ago
- Seal Collaboration Packby KhaydarA collaboration between Khaydar's Bazaar and BLUE, adding more seals to the game. Contains: -Baikal Seal (Pusa sibirica) by Irritating Fish -Leopard Seal (Hydrurga leptonyx) by Irritating Fish -Spotted Seal (Phoca largha) by Khaydar -Male Ribbon Seal (Histriophoca fasciata) by Khaydar -Female Rib...3.0k downloadsupdated 3 y ago
- Khaydar's Bazaar - Tide pool tankby KhaydarAdds a new tank to rank 4, unlocked when researching deep tanks. The tank gives bonuses to rock and cave, without the need to add decorations. You can add decorations like I did on the screenshot. Works with base game, no dependencies. Known bug: Floating scenery are over the surface. -----Update...3.0k downloadsupdated 5 y ago
- Jeweled Gemfishby grosseberthaI am happy to propose you the Anthias asperilinguis (the jeweled gemfish).3.0k downloadsupdated 6 y ago
- Salmonid Packby FlishsterAdds five species of salmonid to your game, including the brown trout, brook trout, cutthroat trout, chinook salmon, and japanese huchen.3.0k downloadsupdated 6 y ago
- Flatfish Packby FlishsterAdds four new flatfish to your game, and the new flatfish category! The new fish added are: The Plate Fish, the Olive Flounder, the Unicorn Sole, and the Norwegian Topknot. This mod also includes an updated version of Amnaa's Turbot behavior mod so that it is sorted as a flatfish. Thanks Amnaa fo...3.0k downloadsupdated 3 y ago
- Red eye piranhaby grosseberthaI am happy to propose you the red eye piranha (Serrasalmus rhombeus).3.0k downloadsupdated 6 y ago
- mantis shrimp mini packby FlishsterAdds the Zebra Mantis Shrimp and the Blueleg Mantis Shrimp to your game! Special thanks to Tenth Architect for the base model, base texture, and animations!3.0k downloadsupdated 6 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.