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    2,053,304 files checkedFiles from Modrinth and CurseForge we downloaded and checked. Counted on 25 Oct 2026.636,163 files with their code readFiles whose code we turned back into readable code and read, in an isolated environment. Counted on 25 Oct 2026.269,472 projects gradedProjects with a letter from A to F. Counted on 25 Oct 2026.
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    © 2026 ModgradeNot an official Minecraft product. Not approved by or associated with Mojang or Microsoft.

    Ichthyology

    Mod

    Vanilla styled fish mod aimed at revamping the waters of Minecraft.

    C79/ 100
    • OverviewC
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityMinecraft 1.20.1
    • ModpacksIn 44
    • ReleasesLatest 14 May

    Download

    ichthyology-1.0.3.jar

    Released 14 May 2026 · 735.1 KB

    Passed: our checks found nothing harmful in this file.

    Download
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade C

    How grades work

    Strengths

    • Security checks passed
    • Stable releases
    • Public source code and issue tracker

    Points lost

    • Releases in only 2 of the last 24 months−5 points
    • First release only 7 months ago−5 points
    • No release in 5 months−3 points
    • Under 5 million downloads−1 point
    All 11 criteria

    • Maintenance

      8 points lost19 / 27
      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.5 months ago (14 May 2026) 9 / 12
      Supports popular versionsWhether the project has a file for a Minecraft version that 15% or more of the popular mods updated in the last 6 months also support. A version many modpacks use, like 1.20.1 or 1.21.1, also counts after a release in the last 12 months.1.20.1 on Forge and NeoForge. 15% or more of the popular mods updated in the last 6 months also have files for 1.20.1. Latest Minecraft: 26.3. 9 / 9
      Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.Releases in 2 of the last 24 months 1 / 6

    • Stability

      Full points15 / 15
      Removed from modpacksHow many modpacks removed it in a later version of the pack. We can only see this in modpacks with two or more versions. A pack that swaps it for another edition of the same project, or that is rebuilt from scratch, does not count.1 of the 30 modpacks with two or more versions removed it in a later one (3%) 10 / 10
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.Not measured yet.
      Known conflictsHow many projects say they do not work with it, compared with how widely it is used. Packs, small projects, forks, ports, add-ons, alternatives and old versions do not count.None 5 / 5

    • Transparency

      Full points10 / 10
      Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · superlord9362/Ichthyology 7 / 7
      Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · superlord9362/Ichthyology 3 / 3

    • Popularity

      1 point lost3 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.42,382 3 / 4

    • Track record

      5 points lost3 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.7 months, 4 releases 3 / 8

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in the latest file for recent Minecraft versions. See Security
    Total79 / 100

    50.5 of the 64 points that apply = 79 out of 100. The points above are rounded to whole numbers.

    Images

    • Jungle
    • Cave
    • Mangrove
    • Swamp

    About

    Ichthyology expands Minecraft’s waterways with real-world-inspired fish and other aquatic animals, placing them in habitats such as jungles, rivers, mangrove swamps, savannas, forests, and underground caves. Its roster includes angelfish, archerfish, carp, catfish, crayfish, fiddler crabs, mudskippers, piranhas, sturgeon, and olms, alongside species such as African cichlids, discus, goldfish, neon tetras, perch, plecos, tilapia, gar, and peacock bass. The animals have varied behaviors: carp approach players holding seeds and may yield shiny scales when fed, mudskippers walk on land and roll in mud, fiddler crabs climb and burrow, and plecos can cling to glass, logs, and stone. Some species are predators, including piranhas that attack zombies and weakened or injured entities, and peacock bass and gar that hunt smaller creatures; archerfish spit at arthropods, while catfish hide in seagrass by day and swim freely at night. Fish offer interactive uses and drops: carp scales can be brewed into a Potion of Luck, blind cave tetras into a Potion of Blindness, and sturgeon occasionally dig up fishing loot while also providing roe for food recipes. Players can use a Chum Bucket in water to attract a random assortment of fish found in that biome, and all Ichthyology fish can also be caught by fishing in their appropriate biomes.

    Written from Modrinth and CurseForge . How we write it

    In-game changes

    Changes the game's code in 3 areas: Rendering and graphicsChanges 7 game code files in this area: drawing mobs, items, particles and textures on screen., Mobs and their behaviorChanges 4 game code files in this area: mobs, animals, villagers, projectiles and how they move and act. and Inventory and itemsChanges 1 game code file in this area: items, chests and other containers, crafting and enchanting..

    Adds 8 blocks, 84 items, 25 mobs, 41 recipes, 30 loot tables and 70 sounds.

    Counted from the names and data files in the mod, so the list may not be complete.

    Replaces 1 of vanilla Minecraft's models.

    Often used with it

    See all 30
    Sinytra ConnectorAAmendmentsAEssential ModBBlueprintAAlex's CavesC

    Details

    Creators
    Ralof, superlord9362 and fuffles
    License
    All rights reserved
    Downloads
    42K
    Created
    4 Apr 2026
    Official pages
    Modrinth , CurseForge
    Links
    Source code , Issues , Discord

    Security

    No harmful code found

    We checked its files and read their code, without running it.

    Why we show this: a mod runs on your computer like any program, so harmful code in it can take your accounts or files. Our checks look for known signs of harm. They cannot prove that a file is harmless. In the grade: malware means no grade, and a Warning in a latest file for a recent Minecraft version lowers it.

    How we checked · The latest file checked, last on 16 Oct 2026
    • FilesWe download the files from Modrinth or CurseForge and look at what is inside them and what their code can do, without running them. Fixed rules tell what is harmful.
      1 latest file, for a recent version. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks. See each file in Releases
    • Their codeWe turn the code of the files back into readable code and follow what it does, without running it. This shows what it downloads, what it sends and where your login goes.
      Read without running it
    • Author on ModrinthThe disclosure form on Modrinth, where the author declares that the project reads or edits things on your system outside the game. Since 13 Aug 2026, Modrinth's rules require it when this applies.
      Nothing declared about your system outside the game.
    • Looked for, not foundWe looked for these in the file and did not find them.
      The internet, folders outside the game, other programs, updating itself, the webcam or microphone, an AI service.

    Privacy

    We found nothing it sends

    We read its code without running it: it contacts no web address while you play.

    Why we show this: a mod can send things about you over the internet, like your player name or your login. Contacting an address to check for updates or download files sends nothing about you. Not in the grade: sending data can be normal for what a mod does.

    How we checked · Its one file read
    • Files readWe read the code without running it. We list each web address the code contacts while you play, and what it sends. Code that is never used is left out.
      The code of its one file, for recent Minecraft versions. See each file in Releases
    • Author on ModrinthThe disclosure form on Modrinth, where the author declares crash reports, usage data and advertisements. Since 13 Aug 2026, Modrinth's rules require it when a project collects data on its users or shows advertisements.
      Nothing declared about crash reports, usage data or advertisements.

    AI

    No sign so far that AI was used to make it

    We looked for AI tools in its description, files and images and found none.

    We have not read its changelogs and code history yet.

    No sign of AI in the game

    We found no AI service, AI library or AI model file in its code.

    Why we show this: some players and servers avoid projects made with AI, and AI in the game can send what you write to an online service. Not in the grade: using AI does not tell whether a project works well or is kept up to date.

    How we checked · 5 places read
    • Author on ModrinthThe disclosure form on Modrinth. Since 13 Aug 2026, Modrinth's rules require it when a substantial part of the code is AI output, when an asset is mainly AI output, or when the project or its page relies on generative AI.
      No AI content or AI features declared.
    • Code historyThe public code on GitHub: who made each change, credit lines such as "Co-authored-by", and its files.
      Not read yet
    • Description and changelogsThe description, project page and newest changelogs: sentences saying an AI tool was used, and text pasted from an AI chat.
      Nothing found in the description
      Changelogs not read yet
    • Its filesFiles that AI coding tools leave behind (like AGENTS.md), and the texts inside the files you download.
      Nothing found
    • Images in its filesHidden data in the images of the files you download, where AI image tools write their name and settings.
      Nothing found
      168 images read
    • Code of the modThe code and files of the mod, read without running it: addresses of AI services, AI libraries, AI model files and a place for your own AI key.
      No AI service, AI library or AI model file
      195 code files read

    Compatibility

    See all 4 files
    NeoForge
    Forge
    1.201.2126.126.3

    Point at or tap a version to see its loaders.

    Runs onWhere to install it: in your game, on the server, or both. As the author says on Modrinth.Needed in your game and on the server, or you cannot join.
    RequiresProjects you must also install for it to work. From the author's lists for its files for recent Minecraft versions, or from its project page.Nothing
    OptionalProjects it can work with but does not need. The author lists them.Nothing
    IncludesProjects packed inside its files.Nothing
    Speed of updatesHow fast it gets a file for new Minecraft versions, on average, compared with similar projects. Not part of the grade.It has no file for Minecraft versions newer than 1.20.1. Many recently updated mods still support 1.20.1.

    Modpacks using this project

    Find modpacks with it

    44 modpacks include Ichthyology in at least one of their versions. Here are the 30 most downloaded.

    ModpackDownloadsLast version with it
    Mythcraft Unleashed17K downloadslast version with it 5 Jul 2026Collectionist1.3K downloadslast version with it 19 Sep 2026The Maze Runner - A Fully Immersive Experience904 downloadslast version with it 7 Sep 2026Bermuda Triangle871 downloadslast version with it 14 May 2026REALISTIC MODPACK - A UNIQUE SURVIVAL EXPERIENCE861 downloadslast version with it 27 Jun 2026minethecraft640 downloadslast version with it 12 Jul 2026Mine & blade615 downloadslast version with it 17 Jun 2026Re Zero545 downloadslast version with it 20 Sep 2026Vast Wilderness527 downloadslast version with it 16 Jun 2026More Than Real506 downloadslast version with it 1 Aug 2026
    1 to 10 of 30123

    Often in the same modpacks

    Mods that modpacks often add together with Ichthyology. Share: how many of the modpacks with Ichthyology also have that mod.

    ProjectTypeShareGrade
    Sinytra ConnectorAModin 64% of the modpacks with IchthyologyAmendmentsAModin 64% of the modpacks with IchthyologyEssential ModBModin 64% of the modpacks with IchthyologyBlueprintAModin 61% of the modpacks with IchthyologyAlex's CavesCModin 52% of the modpacks with IchthyologyYUNG's Better Nether FortressesAModin 50% of the modpacks with IchthyologyL_Ender's CataclysmBModin 48% of the modpacks with IchthyologyYUNG's Better End IslandAModin 48% of the modpacks with IchthyologyYUNG's Better Ocean MonumentsAModin 48% of the modpacks with IchthyologyCritters and CompanionsAModin 45% of the modpacks with Ichthyology
    1 to 10 of 30123

    Latest files

    The newest file for each Minecraft version and loader. The files for recent versions come first. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks.

    MinecraftLoaderVersionSecuritySendsRequires
    1.20.1·NeoForge, Forge1.0.31.0.3 · ichthyology-1.0.3.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.

    4 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.20.1The latest file for its Minecraft version and loader·Forge, NeoForge1.0.31.0.3 · ichthyology-1.0.3.jar (main file)·14 May 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 735.1 KB
    1.20.1·Forge, NeoForge1.0.21.0.2 · ichthyology-1.0.2.jar (main file)·6 Apr 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 747.4 KB
    1.20.1·Forge, NeoForge1.0.11.0.1 · ichthyology-1.0.1.jar (main file)·4 Apr 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 746.1 KB
    1.20.1·Forge, NeoForge1.0.01.0.0 · ichthyology-1.0.0.jar (main file)·4 Apr 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 746.1 KB