ModsBehind Glass: Aquarium Simulator
Behind Glass: Aquarium Simulator 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.
159 mods, most downloaded first · newest update 25 Jul 2026
- African Cichlid Deep Waterby 104th_IronMikeA build for chiclids, mostly based on lake Tanganyika. With deep water mood, a rock wall, shore plants and many caves and cravices for your cichlids to hide in. Enjoy! Can be copied/cloned and edited.81 downloadsupdated 21 mo ago
- Rio Negro2025by Olegovi411Rio Negro River biotope81 downloadsupdated 14 mo ago
- natrual watersby Soybeanfreshwater natrual look80 downloadsupdated 22 mo ago
- Freshwaterby Dramatic PancakeFeaturing a moss ball tree!78 downloadsupdated 5 y ago
- Takashi Amano Tribute - Simulation Modeby Big Bad NonjaTakashi Amano tribute tank originally built by James Findley of Green machine UK. Includes a new Giant Neon Tetra breed, Kanji Corys, Flagfin Tetra and Psuedo Anostomus77 downloadsupdated 4 y ago
- Giant Aquariumby 76561198826582438big aquarium with little fish76 downloadsupdated 5 y ago
- Discus Deluxe Wildby 76561198976861503This is my first blackwater tank, a brand new Discus Deluxe with no less than 3 variants, including these unique ones: Hackel Discus Alenquer Discus Blue Discus74 downloadsupdated 5 y ago
- big salt waterby 76561199062480728197 gal 44 creatures very colorful74 downloadsupdated 5 y ago
- Huahine Lagoon PYFby mppc2001Royal Angel, Black Humbug & Fiji Anenomefish73 downloadsupdated 4 y ago
- under stoneby ShimmyDancebeneath the rocks...72 downloadsupdated 4 y ago
- underwater gardenby 76561198349218016a show aquarium with more than one fish specie72 downloadsupdated 5 y ago
- XM | 295g 'Undertoe Gardens' 79.35.24by XmangamrAn Underwater reef turned into a piranha / shark fresh / salt mixture of water green gardens- Hybrid Fresh/salt water tank with the following hybrid species: Red-drop Tetras (2) Yellow Chromis Damsels (3) Rainbow Tetra Sharks (5) Black Thread Shark Grey Spotted Catfish Mandarin Shark Black-Nosed...71 downloadsupdated 4 y ago
- Log aquascapeby Budgiesmugglerwild/jungle style aquarium71 downloadsupdated 4 y ago
- For the little Fishby 76561198807603178An Aquarium where small Fish can feel comfortable.70 downloadsupdated 4 y ago
- Lake Valencia Stream Biotope (Venezuela) - Sim Modeby Big Bad Nonja35x16x16 Fresh water tank depicting a stream leading into Lake Valencia Venezuela. Contains 4 breeds of Heart and Black Tetras and a Psuedo Anostomus. Simulation mode67 downloadsupdated 4 y ago
- Karibikby IronNightKnight66 downloadsupdated 16 mo ago
- The Great Coral Archby 76561199351510136The most vibrant, lively oasis I could squeeze out of my brain.63 downloadsupdated 3 y ago
- Altum Tankby 76561199222867670Beautiful Altum Tank62 downloadsupdated 5 y ago
- Floating style Reef tank - Simulation Modeby Big Bad NonjaFloating style reef tank with assortment of custom bred fishes. Simualtion mode. Make sure to monitor and adjust your water parameters as needed. If you are not familiar with water chemistry for salt water tanks. Do not download.62 downloadsupdated 4 y ago
- Reef Caveby The RavenA cave in a reef.61 downloadsupdated 18 mo ago
- Death Islandby r4mm4rRobinson is dead.59 downloadsupdated 5 y ago
- A Symmetry in Greenby quasar333666Symmetry promotes a sense of balance and peace. Watch the crabs as they crawl atop the towers. At first glance, there is symmetry. Upon closer inspection, the dark rock is not symmetrical. The towers look like sisters, but another take reveals they are not twins. In fact, the longer you look, the...58 downloadsupdated 5 y ago
- Lake Kaindy KAZby mppc2001Inspiration from submerged forrest in Kazakhstan Odessa barbs, Bloodfin Tetra & Sucker57 downloadsupdated 4 y ago
- Oceania Reef AUSby mppc2001Vertical Marine Tank 50x90x50 Clownfish, Damsel, Anenomes & Coral57 downloadsupdated 4 y ago
- Mermaid´s Worldby r4mm4rSalty Mermaid Tank57 downloadsupdated 5 y ago
- Saltwater Reefby Eleven630 L Aquascape 1,50x70x6057 downloadsupdated 4 y ago
- discus and altum biotopeby Olegovi411discus and altum biotope in Rio Negro57 downloadsupdated 3 y ago
- Green Dreamby r4mm4rGreen and Red56 downloadsupdated 5 y ago
- River Bed Scapeby 76561198855908341Relaxing mimic of a riverbed. Dominant wood structures and red accent plants add depth and are naturally pleasing to the eyes56 downloadsupdated 5 y ago
- rasbora s kingdomby Olegovi411aquarium with rasbora s56 downloadsupdated 2 y ago
- Chiclid tank ft. bricksby 76561199063076170This is a relatively simple scape, it has anubias growing out from the assorted pots and bricks placed around the tank. I'm a huge fan of this scape myself, and I think these new decorations are an amazing addition to the game.55 downloadsupdated 4 y ago
- Neon Tetra Schooling Scapeby 76561198828743587simple neon tetra schooling scape55 downloadsupdated 17 mo ago
- Mountain Pathby 76561198423746232A snandy and rocky look with lots of vibrant green. Two different species of Tetra's which are, the (Neon tetra and Rummy-nose tetra) as well as a handful of the Chili rasbora's, to make this tank pop!54 downloadsupdated 4 y ago
- PLanted Tankby 76561199063076170I made this tank, hope you like it!54 downloadsupdated 5 y ago
- GG Iwagumi Brazilian mix 199x60x100cmby Al Darisfirst try to share for mixed styles54 downloadsupdated 5 y ago
- South American Cichlid - Biotope tank - Simulation modeby Big Bad NonjaSouth American Cichlid Biotope tank. Roots, Val and a flat-ish substrate simulate a South American river bed, along the bank. Based on this IRL build here -51 downloadsupdated 4 y ago
- Peaceful Volcanoby CrispyA simple aquarium, designed to take you away to the open sea. Feel the wind, listen to the waves and calm your mind.50 downloadsupdated 5 y ago
- Lalu´s Meerby laluquaIch spiele erst mal nur49 downloadsupdated 3 y ago
- Infinityby 76561199026528676Freshwater Enviroment with the addition of a special breed: Veteran Fox.49 downloadsupdated 3 y ago
- XM | 200g Shark Reef Hybrid 75.25.25by XmangamrCreating sharks in Behind Glass- Hybrids: Black Thread Shark Grey Sea Shark Black-Nose Shark Mandarin Shark Shark-faced Clownfish Fire Angel Belko Surgeon Shark Red Angus Angelfish Black Spotted Dotty Pear-dot Tang Teardrop Clownfish Dottyback Trigger Shark49 downloadsupdated 4 y ago
- The Riverside Shrineby Acai MatzMiniature Scape - Buddhist Shrine on the hill right next to a river. (Special view from the side)49 downloadsupdated 5 y ago
- Caño Maporal VENby mppc2001Piranha, Rednosed Tetra, Vampire Crab49 downloadsupdated 4 y ago
- Pinks Mystic Forestby 76561199582135577A Mystic Forest Background With Pinks49 downloadsupdated 16 mo ago
- characinidaeby Olegovi41148 downloadsupdated 3 y ago
- Salzwasser 80cm TJby CPT.KLUNKERRiff Aquarium Nano48 downloadsupdated 5 y ago
- Trunky Riverby Mofortius MaximusMy first tank I have designed. Used a custom backdrop I also made. This program is SOOOO much fun! I reckon I will spend a LOT of time making tanks now lol!!48 downloadsupdated 3 y ago
- Vertical Saltwater Tankby PivotSmall vertical tank with saltwater reef fish.47 downloadsupdated 4 y ago
- The Mbuna Tankby 104th_IronMikeInspired by MD Fish Tanks Mbuna Tank (you can find the episode on youtube). Large elevated center piece with rocks, roots and plants and lots and lots of swimming space for your Malawi open water cichlids. Enjoy! Can be copied/cloned and edited.46 downloadsupdated 21 mo ago
159 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.