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
- Mudskipper Mini Packby FlishsterAdds two new mudskipperes to your game!2.4k downloadsupdated 8 mo ago
- Pelagica - Small Reef Collectionby 1electronA selection of 6 rare small fish for your aquarium. Included are the Speckled Butterflyfish, Fisher's Angelfish, Flagtail Grouper, Sunset Anthias, Blackbar Surgeonfish, and Lined Chromis.2.4k downloadsupdated 6 y ago
- Butterflyfish Trio Pack 4by grosseberthaAdd 3 new butterflyfish to your game, the Asian Butterflyfish (Chaetodon argentatus), the Chevron Butterflyfish(Chaetodon trifascialis) and the Humphead Bannerfish (Heniochus varius).2.4k downloadsupdated 5 y ago
- Amazonian Basin Packby grosseberthaThis is my last mod i think for MQ, i have all this species in waiting stage, so i decide to upload them, hope you are going to enjoy it.2.4k downloadsupdated 4 y ago
- Speartooth Sharkby 76561198880010479Adds the Speartooth Shark to your game! An extremely rare freshwater shark that is unusually sluggish, relying instead on river currents to move around.2.4k downloadsupdated 5 y ago
- Arabian Reefby Irritating FishThe Arabian Sea is home to several unique creatures! Here are three colorful and charasmatic fish from the Arabian Sea to help fill your aquariums. Striped Eel Catfish (Plotosus lineatus) Lined Tamarin Wrasse (Anampses lineatus) Tentacled Flathead (Papilloculiceps longiceps)2.4k downloadsupdated 6 y ago
- Squirrelfish and Soldierfish Trio Pack 1by grosseberthaAdd 3 new squirrelfish and soldierfish to your game, the Longspine Squirrelfish (Holocentrus rufus), the Splendid Soldierfish (Myripristis botche) and the Silverspot squirrelfish (Sargocentron caudimaculatum).2.4k downloadsupdated 5 y ago
- BLUE - Gulf Sturgeonby Irritating FishThe Blue Worldwide Aquatic Shops ventures down to the Gulf of Mexico to provide your aquaria one of it's largest fish, the majestic Gulf Sturgeon (Acipenser oxyrinchus desotoi)! This species will be sure to give your guests delight.2.4k downloadsupdated 6 y ago
- Gulf Stream Aquaria - Amazon Assortmentby RappyThe Amazon is a treasure trove of life, with hundreds upon hundreds of fish species making their way to public and private aquaria. This mod adds ten more fish from this vast and diverse ecosystem for your Megaquarium: -Dwarf Hatchetfish (Carnegiella schereri); unlocks at Rank 6 -Flag Cichlid (Me...2.4k downloadsupdated 8 mo ago
- Phanerium - Aegirosaurus leptospondylusby SynchroLightThis mod adds Aegirosaurus leptospondylus to your game, a small Ichthyosaur from Europe.2.4k downloadsupdated 6 y ago
- New Zealand Sealife Packby 76561198880010479Adds 21 species from the seas of New Zealand to your game! Ahuruhuru Goatfish Australian Ghostshark Blue Maomao Bluebottle Broadnose Sevengill Shark Chatham Albatross Eastern Nannygai Little Penguin Longnose Fur Seal Many-ribbed Jelly New Zealand Piper Pink Maomao Pink Snapper (adult and juvenile...2.4k downloadsupdated 14 mo ago
- Broad-Shelled River Turtleby 76561198880010479Adds the Broad-Shelled River Turtle to your game! #TwoYearAnniversary2.4k downloadsupdated 6 y ago
- BLUE - Sanderlingby Irritating FishOne of the many sandpipers, the Sanderling (Calidris alba), will make for a very entertaining animal for your guests!2.4k downloadsupdated 5 y ago
- Pelagica - Glorious Goniobranchus Iby 1electronThis pack adds 8 nudibranchs of the Goniobranchus genus to your game. The ones added here are easier to keep than the ones added in the second pack. They are difficult to keep and some of them are small enough that one animal appears as two for balancing and not having size 1 animals. Credit to I...2.4k downloadsupdated 6 y ago
- BLUE - Central American Freshwater Fishes Part 1by Irritating FishCentral America has lots of interesting fish species that often find their ways into private aquaria. Find some in this pack! Atlantic Needlefish (Strongylura marina) Tropical Gar (Atractosteus tropicus) Porthole Livebearer (Poeciliopsis gracilis) Kreiser's Killifish (Profundulus kreiseri)2.4k downloadsupdated 5 y ago
- Butterflyfish Trio Pack 3by grosseberthaAdd 3 new butterflyfish to your game, the Latticed Butterflyfish (Chaetodon rafflesii), the Oblique Butterflyfish (Prognathodes obliquus) and the Panda Butterflyfish (Chaetodon adiergastos).2.4k downloadsupdated 5 y ago
- Challenge Paintsby grosseberthaThis mod adds paintings related to mod challenges. for the moment 5 paintings are available. - Nile Paint ( Nile Challenge ) - Mélanesian Paint ( Mélanesian Freshwater Challenge ) - North and Baltic Sea Paint ( North and Baltic Sea Challenge ) - Arabian Paint ( Arabian Sea Challenge ) - Florida P...2.4k downloadsupdated 6 y ago
- Pelagica - Bigfin Reef Squidby 1electronOne of the only species of squid to ever be kept in captivity. Looks great in kelp tanks. This mod is my submission for the 2nd Anniversary week 1 challenge. #TwoYearAnniversary2.4k downloadsupdated 6 y ago
- Silvertip Sharkby thesrdicAdds the Silvertip Shark, a medium-sized requiem shark found throughout the Indian and Pacific Oceans. Unlocking at rank 10.2.4k downloadsupdated 6 y ago
- Odd U-Tankby OthlonA U-shaped lagoon tank with an odd numbered in-step for odd-numbered floor plans.2.3k downloadsupdated 7 y ago
- Catfish Mini Packby FlishsterAdds two new catfish to your game!2.3k downloadsupdated 8 mo ago
- Pelagica - Glorious Goniobranchus IIby 1electronThis pack adds 8 nudibranchs of the Goniobranchus genus to your game. These are harder to keep than those in the first pack. They are difficult to keep and some of them are small enough that one animal appears as two for balancing and not having size 1 animals. Credit to Irritating Fish for the m...2.3k downloadsupdated 6 y ago
- Coral Sea Packby 76561198880010479Adds three species found in the Coral Sea to your game, the Epaulette Surgeonfish, Porcupine Ray and the Queensland Grouper. The Epaulette Surgeonfish (Acanthurus nigricauda) is a large but peaceful grazer of algae found in the Indo-Pacific. A large and personable fish, the Queensland Grouper (Ep...2.3k downloadsupdated 6 y ago
- Kreisel Tanks Packby 76561198842575853Adds 5 more jellyfish tanks2.3k downloadsupdated 8 mo ago
- Large Lagoons packby 76561198842575853This pack features spacious lagoons with rounded corners and viewing platforms - perfect for most sharks.2.3k downloadsupdated 8 mo ago
- Beluga Sturgeonby MjmannellaThe beluga is the largest freshwater fish in the world, rivalling the might great white shark in size! Can your aquarium house this elusive titan of a fish? Credit to IrritatingFish for providing a model!2.3k downloadsupdated 3 y ago
- African Sealife Packby 76561198880010479Six creatures from the coasts of Africa for your aquariums! Includes the Blacktip Kingfish, Cape Horse Mackerel, Evileye Puffer, Natal Wrasse, South Coast Rock Lobster and Spotted Gully Shark.2.3k downloadsupdated 3 y ago
- Pelagica & Bosjesman - Yellow Boxfishby 1electronAnother one of these mods.2.3k downloadsupdated 7 y ago
- H.A.A.I. - False Stonefishby 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...2.3k downloadsupdated 5 y ago
- Trevally Packby 76561198880010479Adds two species of trevally to your game, the White Trevally (Pseudocaranx dentex) and the Bluefin Trevally (Caranx melampygus).2.3k downloadsupdated 3 y ago
- RickReptile Deep Sea Sceneryby rickreptileReptile Productions presents Deep Sea Scenery. This mod pack provides a lot of very large boulders and kelp, which can greatly help with decorating your larger tanks. Modders note: By downloading/using this mod you agree to not alter/translate/re-release this mod without written permission of the...2.3k downloadsupdated 3 y ago
- Pelagica - Rosy Barbby 1electron2.3k downloadsupdated 6 y ago
- The Cory Collectionby 76561198393615013A collection of various Corydoras species! This pack includes: - Bronze Cory (Corydoras Aeneus) - Julii Cory (Corydoras Julii) - Black Venezuela Cory (Corydoras Schultzei) - Albino Cory (Albino Corydoras Aeneus) - Dwarf Pepper Cory (Corydoras Hasbrosus) - Pygmy Cory (Corydoras Pygmaeus) - Emerald...2.3k downloadsupdated 5 y ago
- Red Swamp Crayfishby RappyAdds the red swamp crayfish, also known as the Louisiana crayfish, to your aquarium. Hardy and fecund, these omnivorous crayfish will easily adapt to your warm freshwater tanks. Be warned, however: with a tendency to harass fish and tear apart vegetation, your tanks might not handle them as well...2.3k downloadsupdated 5 y ago
- Special Sounds Libraryby KhaydarThis mod does nothing on it's own. This is a library for some of my mods that have custom animal sounds such as whales. This was made for saving time, disk space and performance. If you are a modder and want to use it for your animals feel free to use it too !2.3k downloadsupdated 23 mo ago
- Outdoor Paintsby ivycatA set of paints for making outdoor areas :)2.3k downloadsupdated 6 y ago
- Blue - Reef Rainbowby Irritating FishAdd all of the colors of the rainbow to your aquarium with this lively bunch of fish! Redcoat (Sargocentron rubrum) Dispar Anthias (Pseudanthias dispar) Golden Hamlet (Hypoplectrus gummigutta) Belted Wrasse (Stethojulis balteata) Blue Hamlet (Hypoplectrus gemma) Purple Reeffish (Chromis scotti) W...2.3k downloadsupdated 5 y ago
- Horse Eye Jack New Textureby grosseberthaAdd a new texture for the vanilla Horse Eye Jack. NOTE: This mod doesn't add a new fish in the game, it just replace the texture for the Horse Eye Jack.2.3k downloadsupdated 6 y ago
- Clownfish Breeding Addonby FlishsterREQUIRES CLOWNFISH SPECIES PACK TO WORK! Adds breeding to the clownfish species in the clownfish species pack, as well as the ocellaris clownfish in base-game, as well as mutations for the ocellaris clownfish and maroon clownfish.2.3k downloadsupdated 6 y ago
- Reaper Cuttlefishby 76561198880010479Adds the adorable Reaper Cuttlefish to your game!2.3k downloadsupdated 6 y ago
- Australian Sealife Pack - Porcupinefish and Puffersby 76561198880010479Adds three species of porcupinefish and puffers to your game! Adds the Stars And Stripes Puffer (Arothron hispidus), Australian Burrfish (Allomycterus pilatus) and Black-Blotched Porcupinefish (Diodon liturosus). This mod is my submission to the Armoured Creatures challenge.2.3k downloadsupdated 5 y ago
- Pelagica - Jawfish Packby 1electronAdds 4 species of jawfish to your game. Included are the Yellowhead, Dusky, Gold-Specs, and Bluespotted Jawfish.2.3k downloadsupdated 6 y ago
- Pelagica & Bosjesman - Pyramid Butterflyfishby 1electronA collaboration between Pelagica and Bosjesman. Really, I didn't do much of anything so don't credit me.2.3k downloadsupdated 7 y ago
- Pelagica - Pepper Corydorasby 1electronA freshwater fish. Obviously requires FF DLC.2.3k downloadsupdated 6 y ago
- Khaydar's Bazaar - Cetacean minipack 7by KhaydarAdds 3 cetaceans -Dall's porpoise - Narwhal - Yangtze river porpoise DeepFreeze update Added shoaling Enrichment need2.3k downloadsupdated 3 y ago
- BLUE - Basking Sharkby Irritating FishWelcome the Basking Shark (Cetorhinus maximus). He has a large mouth. He is large. Enjoy.2.3k downloadsupdated 5 y ago
- Atlantic Horseshoe Crabby nightmare6445Add the Atlantic Horseshoe Crab to your game.2.3k downloadsupdated 7 y ago
- Squirrelfish and Soldierfish Trio Pack 2by grosseberthaAdd 3 new squirrelfish and soldierfish to your game, the Yellowfin Soldierfish (Myripristis chryseres), the Longjaw Squirrelfish (Neoniphon marianus) and the Spinyface Soldierfish (Pristilepis oligolepis).2.3k 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.