0013557: Moghoppers (and other Vermin Fish) lack [VERMIN_FISH] tag in Raws. - Dwarf Fortress Bug Tracker

ID	Project	Category	View Status	Date Submitted	Last Update

0013557	Dwarf Fortress	Animal Populations	public	2026-10-03 07:53	2026-10-03 07:53

Reporter	PsiOmegas	Assigned To
Priority	normal	Severity	minor	Reproducibility	always
Status	new	Resolution	open
Platform	PC	OS	Microsoft Windows 11 Home	OS Version	10.0.262
Product Version	53.16

Summary	0013557: Moghoppers (and other Vermin Fish) lack [VERMIN_FISH] tag in Raws.
Description	Moghoppers (and apparently several other kinds of vermin fish, though I have not personally investigated/tested) do not have the [VERMIN_FISH] tag in their Raws and cannot be caught using "capture live fish" via a Fishery. Moghoppers do however have the [VERMIN_GROUNDER] tag and can be caught via a Vermin catcher's shop as they are able to move around on land. Other vermin fish which may be affected: lungfish (VERMIN_NOTRAP though?), sailfin molly, clown loach, guppy, seahorses, glasseye, banded knifefish, white-spotted puffer, sea nettle jellyfish Steam discussion about the above: https://steamcommunity.com/app/975370/discussions/0/655982159561121508/ A community mod which adds VERMIN_FISH to lungfish, sailfin molly, clown loach, guppy, seahorses, glasseye, banded knifefish, white-spotted puffer, sea nettle jellyfish, and moghoppers: https://steamcommunity.com/sharedfiles/filedetails/?id=3737293756
Steps To Reproduce	In order to test this, I increased the population and commonness of Moghoppers by making the below changes to the Raws in Dwarf Fortress\data\vanilla\vanilla_creatures\objects\creature_other: [CREATURE:MOGHOPPER] REMOVED: [NO_SPRING] [NO_AUTUMN] [NO_WINTER] [SAVAGE] ADDED: [BIOME:ANY_LAKE] [BIOME:ANY_RIVER] INCREASED: [POPULATION_NUMBER:10000:50000] [FREQUENCY:100] See below: [CREATURE:MOGHOPPER] [DESCRIPTION:A small mud-dwelling amphibian.] [NAME:moghopper:moghoppers:moghopper] [CASTE_NAME:moghopper:moghoppers:moghopper] [CREATURE_TILE:249][COLOR:6:0:0] [PETVALUE:20] [VERMIN_GROUNDER][FISHITEM][FREQUENCY:100] [AMPHIBIOUS][SMALL_REMAINS] [NATURAL][PET_EXOTIC] [NOT_BUTCHERABLE] [BIOME:ANY_POOL] [BIOME:ANY_LAKE] [BIOME:ANY_RIVER] [POPULATION_NUMBER:10000:50000] [PREFSTRING:round tummies] [BODY:QUADRUPED_NECK:2EYES:NOSE:2LUNGS:HEART:GUTS:ORGANS:THROAT:NECK:SPINE:BRAIN:SKULL:MOUTH:TONGUE:RIBCAGE] [BODY_DETAIL_PLAN:STANDARD_MATERIALS] [REMOVE_MATERIAL:HAIR] [BODY_DETAIL_PLAN:STANDARD_TISSUES] [REMOVE_TISSUE:HAIR] [BODY_DETAIL_PLAN:VERTEBRATE_TISSUE_LAYERS:SKIN:FAT:MUSCLE:BONE:CARTILAGE] [SELECT_TISSUE_LAYER:HEART:BY_CATEGORY:HEART] [PLUS_TISSUE_LAYER:SKIN:BY_CATEGORY:THROAT] [TL_MAJOR_ARTERIES] [BODY_DETAIL_PLAN:STANDARD_HEAD_POSITIONS] [BODY_DETAIL_PLAN:HUMANOID_RIBCAGE_POSITIONS] [USE_MATERIAL_TEMPLATE:SINEW:SINEW_TEMPLATE] [TENDONS:LOCAL_CREATURE_MAT:SINEW:200] [LIGAMENTS:LOCAL_CREATURE_MAT:SINEW:200] [HAS_NERVES] [USE_MATERIAL_TEMPLATE:MOG_JUICE:CREATURE_EXTRACT_TEMPLATE] [STATE_NAME:ALL_SOLID:frozen mog juice] [STATE_ADJ:ALL_SOLID:frozen mog juice] [STATE_NAME:LIQUID:mog juice] [STATE_ADJ:LIQUID:mog juice] [STATE_NAME:GAS:boiling mog juice] [STATE_ADJ:GAS:boiling mog juice] [EDIBLE_COOKED] [PREFIX:NONE] [EXTRACT:LOCAL_CREATURE_MAT:MOG_JUICE] [APPLY_CREATURE_VARIATION:STANDARD_WALK_CRAWL_GAITS:9000:8900:8825:8775:9500:9900] 1 kph [APPLY_CREATURE_VARIATION:STANDARD_CRAWLING_GAITS:9000:8900:8825:8775:9500:9900] 1 kph [APPLY_CREATURE_VARIATION:STANDARD_SWIMMING_GAITS:9000:8900:8825:8775:9500:9900] 1 kph [USE_MATERIAL_TEMPLATE:BLOOD:BLOOD_TEMPLATE] [BLOOD:LOCAL_CREATURE_MAT:BLOOD:LIQUID] [CREATURE_CLASS:GENERAL_POISON] [GETS_WOUND_INFECTIONS] [GETS_INFECTIONS_FROM_ROT] [USE_MATERIAL_TEMPLATE:PUS:PUS_TEMPLATE] [PUS:LOCAL_CREATURE_MAT:PUS:LIQUID] [BODY_SIZE:0:0:300] [BODY_APPEARANCE_MODIFIER:LENGTH:90:95:98:100:102:105:110] [BODY_APPEARANCE_MODIFIER:HEIGHT:90:95:98:100:102:105:110] [BODY_APPEARANCE_MODIFIER:BROADNESS:90:95:98:100:102:105:110] [MAXAGE:2:3] [ATTACK:BITE:BODYPART:BY_CATEGORY:MOUTH] [ATTACK_SKILL:BITE] [ATTACK_VERB:bite:bites] [ATTACK_CONTACT_PERC:100] [ATTACK_PREPARE_AND_RECOVER:3:3] [ATTACK_PRIORITY:MAIN] [ATTACK_FLAG_CANLATCH] [CREPUSCULAR] [SWIMS_INNATE] [CASTE:FEMALE] [FEMALE] [CASTE:MALE] [MALE] [SELECT_CASTE:ALL] [SET_TL_GROUP:BY_CATEGORY:ALL:SKIN] [TL_COLOR_MODIFIER:GREEN:1] [TLCM_NOUN:skin:SINGULAR] [SET_TL_GROUP:BY_CATEGORY:EYE:EYE] [TL_COLOR_MODIFIER:BLACK:1] [TLCM_NOUN:eyes:PLURAL]
Additional Information	It would be great if the vanilla occurrence rate of moghoppers could be increased. At the moment, almost nobody seems to know that this mechanic even exists, let alone has ever had the opportunity to interact with it. I’ve discussed this with several very experienced Dwarf Fortress players, including blindIRL, Hazhaza, and Deep0x20, and even they have had little to no interaction or experience with this mechanic. The fact that even the wiki contains incorrect information about Moghoppers is a good indication of how rarely players encounter and use this system. For example, the wiki currently states: Captured live fish: “Captured turtles and moghoppers can be used as pets. A captured moghopper is also used to make five units of mog juice using the fishery's ‘extract from live fish’ command. This extract can be used for cooking and trading.” If a mechanic is so rare that even experienced players almost never encounter it, and the available community written documentation is inaccurate, I think there’s a strong case for increasing the vanilla occurrence rate of Moghoppers. Increasing their frequency would make the mechanic much more discoverable and give more players a chance to actually experience and make use of it, without necessarily requiring any changes to how the mechanic itself works.
Tags	53.16, animal traps, easily fixed, raws, vermin

Date Modified	Username	Field	Change
2026-10-03 07:53	PsiOmegas	New Issue
2026-10-03 07:53	PsiOmegas	Tag Attached: 53.16
2026-10-03 07:53	PsiOmegas	Tag Attached: animal traps
2026-10-03 07:53	PsiOmegas	Tag Attached: easily fixed
2026-10-03 07:53	PsiOmegas	Tag Attached: raws
2026-10-03 07:53	PsiOmegas	Tag Attached: vermin