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'Rum'-pumped crab

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'Rum'-pumped crab icon
Killing 'rum'-pumped crabs

By having the surgeons trapped in the other room, you can easily deal with the crabs.

'Rum'-pumped crabs are mutated crustaceans found in the 'Rum'geon on Braindeath Island. They have been injected by Captain Donnie's general malpractitioners in order to create an army. They are the only monsters that drop the brackish blade.

In order to access the dungeon, the quest A Clockwork Syringe needs to be partially completed and the player must have a Fishbowl helmet and Diving apparatus equipped, otherwise they will not be allowed to enter.

'Rum'-pumped crabs use only melee with a maximum hit of around 240. They will constantly be considered aggressive towards anyone within the 'Rum'geon. They will take increased damage from the brackish blade that they drop, as well as the Brine sabre.



No charmGold charmGreen charmCrimson charmBlue charm
Represents a 90% confidence range.
Based on a sample of 2,401 kills.
1 charm is dropped at a time.
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Main dropEdit

Item Quantity Rarity GE price
Rune clawRune claw1Uncommon25,685
Brackish bladeBrackish blade1Rare165,872
Fishing potion (4)Fishing potion (4)(noted)Common1,206
Super attack (1)Super attack (1)1Common767
Super strength (1)Super strength (1)1Common1,672
Super defence (1)Super defence (1)1Uncommon1,561
Super ranging potion (2)Super ranging potion (2)1Rare6,981
Grimy guamGrimy guam1Common93
Grimy marrentillGrimy marrentill1Common124
Grimy tarrominGrimy tarromin1Common36
Grimy harralanderGrimy harralander1Common85
Grimy ranarrGrimy ranarr1Common2,519
Grimy iritGrimy irit1Common2,951
Grimy kwuarmGrimy kwuarm1Uncommon4,748
Grimy avantoeGrimy avantoe1Uncommon2,464
Grimy cadantineGrimy cadantine1Uncommon4,984
Grimy lantadymeGrimy lantadyme1Uncommon3,607
Grimy dwarf weedGrimy dwarf weed1Uncommon3,469
Potato seed 5Potato seed1–3Common11–33
Onion seed 5Onion seed1–3Common5–15
Cabbage seed 5Cabbage seed1–3Common11–33
Tomato seed 5Tomato seed1–3Common3–9
Strawberry seed 5Strawberry seed1–3Common116–348
Watermelon seed 5Watermelon seed1–3Uncommon579–1,737
Evil turnip seed 5Evil turnip seed1–4Uncommon12–48
Sweetcorn seed 5Sweetcorn seed1–3Uncommon12–36
Morchella mushroom spore 5Morchella mushroom spore2Uncommon372
Fellstalk seed 5Fellstalk seed1Rare313
Coins 1000Coins342–1,671Common342–1,671
Raw lobsterRaw lobster1–3Common101–303
Gold oreGold ore(noted)Common300
Fire talismanFire talisman1Rare1,527
Rare drop tableRare drop table1RareNot sold


Item Quantity Rarity GE price
Spirit sapphireSpirit sapphire1RareNot sold
Spirit emeraldSpirit emerald1RareNot sold
Spirit rubySpirit ruby1RareNot sold
Starved ancient effigyStarved ancient effigy1Very rareNot sold

Rare drop tableEdit

This monster has access to the rare drop table.
A ring of wealth, luck potion or collector's insignia are not required to access the table.
Show/hide rare drop table
Item Quantity Rarity GE price
Coins 1000Coins250–500; 3,000Common250–3,000
Uncut sapphireUncut sapphire1Common875
Uncut emeraldUncut emerald1Common1,591
Uncut rubyUncut ruby1Common2,632
Uncut diamondUncut diamond1Common3,988
Uncut diamondUncut diamond45–55 (noted)Rare179,460–219,340
Loop half of a keyLoop half of a key1Common18,039
Tooth half of a keyTooth half of a key1Common25,579
Uncut dragonstoneUncut dragonstone1Uncommon11,862
Uncut dragonstoneUncut dragonstone45–55 (noted)Rare533,790–652,410
Dragon longswordDragon longsword1Common57,639
Dragon spearDragon spear1Rare36,254
BattlestaffBattlestaff180–220 (noted)Rare1,267,020–1,548,580
Rune javelinRune javelin5Rare910
Rune platebodyRune platebody1Uncommon37,620
Rune platebodyRune platebody15–25 (noted)Rare564,300–940,500
Shield left halfShield left half1Rare63,809
Dragon helmDragon helm1Uncommon58,652
Rune arrowheads 5Rune arrowheads113–137Common19,662–23,838
Onyx bolts 5Onyx bolts135–165Very rare1,078,920–1,318,680
Vecna skullVecna skull1Very rare69,802
Chaos talismanChaos talisman1Rare1,141
Nature talismanNature talisman1Rare991
Water talismanWater talisman65–82 (noted)Rare375,700–473,960
Earth talismanEarth talisman65–82 (noted)Rare112,515–141,942
Fire talismanFire talisman25–35 (noted)Rare38,175–53,445
Raw lobsterRaw lobster135–165 (noted)Common13,635–16,665
Raw sharkRaw shark225–275 (noted)Uncommon234,450–286,550
Big bonesBig bones72–90 (noted)Uncommon26,352–32,940
Dragon bonesDragon bones180–220 (noted)Rare294,660–360,140
CoalCoal200–1,100 (noted)Uncommon36,400–200,200
Gold oreGold ore90–110 (noted)Common13,500–16,500
Adamantite oreAdamantite ore180–220 (noted)Uncommon227,700–278,300
Adamant barAdamant bar14–16 (noted)Common32,634–37,296
Adamant barAdamant bar135–165 (noted)Rare314,685–384,615
Runite oreRunite ore90–110 (noted)Rare1,031,760–1,261,040
Rune barRune bar(noted)Common41,886
Rune barRune bar45–55 (noted)Rare628,290–767,910
Grimy torstolGrimy torstol90–110 (noted)Uncommon387,180–473,220
Grimy snapdragonGrimy snapdragon90–110 (noted)Uncommon351,450–429,550
Super restore (4)Super restore (4)45–55 (noted)Uncommon228,105–278,795
Prayer potion (4)Prayer potion (4)45–55 (noted)Uncommon143,280–175,120
Lantadyme seed 5Lantadyme seed14–16Uncommon13,986–15,984
Dwarf weed seed 5Dwarf weed seed14–16Uncommon13,776–15,744
Magic seed 5Magic seed4Uncommon482,096
Palm tree seed 5Palm tree seed10Rare1,675,240
FlaxFlax450–550 (noted)Common4,500–5,500
Molten glassMolten glass45–55 (noted)Common9,720–11,880
Soft claySoft clay450–550 (noted)Uncommon175,050–213,950
Yew logsYew logs68–82Uncommon12,852–15,498
Yew logsYew logs675–825 (noted)Rare127,575–155,925
Teak plankTeak plank45–55 (noted)Uncommon29,025–35,475
Mahogany plankMahogany plank270–330 (noted)Rare565,920–691,680
Brawling gloves (Melee)Brawling gloves (Melee)1Very rareNot sold
Brawling gloves (Magic)Brawling gloves (Magic)1Very rareNot sold
Brawling gloves (Ranged)Brawling gloves (Ranged)1Very rareNot sold
Brawling gloves (Agility)Brawling gloves (Agility)1Very rareNot sold
Brawling gloves (Cooking)Brawling gloves (Cooking)1Very rareNot sold
Brawling gloves (FM)Brawling gloves (FM)1Very rareNot sold
Brawling gloves (Fishing)Brawling gloves (Fishing)1Very rareNot sold
Brawling gloves (Hunter)Brawling gloves (Hunter)1Very rareNot sold
Brawling gloves (Mining)Brawling gloves (Mining)1Very rareNot sold
Brawling gloves (Prayer)Brawling gloves (Prayer)1Very rareNot sold
Brawling gloves (Smithing)Brawling gloves (Smithing)1Very rareNot sold
Brawling gloves (Thieving)Brawling gloves (Thieving)1Very rareNot sold
Brawling gloves (WC)Brawling gloves (WC)1Very rareNot sold
Crystal triskelion fragment 1Crystal triskelion fragment 11Very rareNot sold
Crystal triskelion fragment 2Crystal triskelion fragment 21Very rareNot sold
Crystal triskelion fragment 3Crystal triskelion fragment 31Very rareNot sold

Universal dropsEdit

Universal drops are dropped by nearly every monster outside of Daemonheim.
These drops are dropped alongside main drops.
Item Quantity Rarity GE price
Key tokenKey token1RareNot sold


  • Before the Evolution of Combat when the special attack of the Brine Sabre and Brackish Blade was used on a 'Rum'-pumped crab the message "The Brine Sabre/Brackish Blade seems super-effective." appeared. This may have been a reference to Pokémon where a player would see "It's super effective!" when a Pokémon was hit by an attack that it was weak to.
  • Killing a 'rum'-pumped crab is required to complete the Alcrabholic task in the Daemonheim task set.
  • Despite requiring a slayer level,'Rum'-pumped crabs are not a slayer assignment.
  • Despite being a crab, they used to drop Bones. This was rectified on 1 July 2014.

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