Clue bottle

Clue bottles are bottles that can be found while training Fishing. Opening them will destroy the bottle and leave players with a clue scroll of the same difficulty as the bottle given. Players will not receive a clue bottle if they possess a clue scroll of the same difficulty tier. Like clue scrolls, players can only have one of each type of clue bottle in their possession. Players can toggle whether or not to receive clue bottles by speaking to Arthur the Clue Hunter in Lumbridge.

If the player receives a clue bottle with a full inventory, it will be placed on the ground.

There are five types of clue bottles:

Rates

The chance of obtaining a clue bottle depends mainly on the player's Fishing level together with the type of fish that is caught, similar to how the drop rate of skilling pets is determined.^[1] In addition, the reward tiers unlocked by completing Combat Achievements grant a 5% boost to the drop rate of the corresponding clue tier, that is to say the easy, medium, hard, and elite clue bottles.

Equipping a ring of wealth (i) doubles the rate of finding clue bottles while fishing in the Wilderness.^[2]

The benefits provided by Rada's blessing or spirit flakes do not apply to clue bottles, and hence their activation will not result in a second clue roll.^[3] Template:Calculator:Fishing/Clue bottles

Formula

Upon a successful skilling action, a roll is made for each clue tier one is eligible to receive (based on which types of clue are already owned) independently of the outcome of any of the other rolls.^[4] For each tier of clue bottle, the following formula is used to determine its drop chance, whereupon a roll is made if the player is eligible.^[5]

The chance is $1$ in $\left\lfloor {\frac {\lfloor {\text{BaseChance}}\times {\text{CA}}\rfloor }{100+{\text{Fishing}}}}\times {\text{ClueTier}}\right\rfloor$

Where:

{\text{BaseChance}}=

The base chance of receiving a clue bottle from catching a specific type of fish. These are the same base chances that determine the drop rate of the heron pet.

{\text{CA}}=

A multiplier of

0.95

if the corresponding reward tier of Combat Achievements has been unlocked, or

1

if it has not.

{\text{Fishing}}=

The player's visible

Fishing level. Visible boosts beyond level 99 are taken into account.^[6]

{\text{ClueTier}}=

The clue tier modifier applied at the end based on the type of clue that is rolled.

Base chance

The table below displays the base chance of obtaining a clue bottle according to fish type.^[7]

Fish	Chance
Shrimp/Anchovies	435,165
Karambwanji	443,697
Sardine/Herring	528,000
Big net fishing	382,609
Trout/Salmon	461,808
Pike	305,792
Rainbow fish	137,739
Tuna/Swordfish	257,770
Lobsters	116,129
Aerial fishing	636,833
Cave eels	257,770
Monkfish	138,583
Karambwan	170,874
Leaping trout	426,954
Leaping salmon
Leaping sturgeon
Sharks	82,243
Infernal eels	160,000
Anglerfish	78,649
Minnow	977,778
Dark crabs	149,434
Sacred eels	99,000
Guppy	257,770
Cavefish
Tetra
Catfish

Clue tier

The following modifiers are applied to the denominator of the drop chance, depending on the type of clue for which a roll attempt is made.^[8]

Clue tier		Modifier
	Beginner	0.2
	Easy	1.7
	Medium	2
	Hard	3.3
	Elite	10

Changes

Date	Changes
[[{{#explode:21 July 2021\| \|0}} {{#explode:21 July 2021\| \|1}}]] [[{{#explode:21 July 2021\| \|2}}]] (update)	Clue bottle rates are now affected by completion of Combat Achievements. Clue bottles no longer roll to determine which tier of clue you get after the initial roll to give you a clue bottle.

References

^ Jagex. Mod Ash's Twitter account. 4 March 2023. Archived from the original on 6 March 2023. Mod Ash: "I did some spot-checking of the Wiki pages and the "base chance" numbers still look correct there, as does the formula for how your level is applied. The CA buff is applied to the "base chance" number *before* the formula is applied."
^ Jagex. Mod Ash's Twitter account. 24 August 2023. Archived from the original on 24 August 2023.
^ Jagex. Mod Ash's Twitter account. 13 March 2023. Archived from the original on 30 July 2023. Mod Ash: "[Oh, one more thing - I'm guessing double fish from Rada Blessing and Spirit Flakes don't result in another Clue Bottle roll, correct?] They do not. You're welcome :)"
^ Jagex. Mod Ash's Twitter account. 11 March 2023. Archived from the original on 15 July 2023. Mod Ash: "[For Clue Geodes, Bottles, and Nests, if you already have a Beginner, Easy, Medium, and Hard Clues in the bank, the next clue received from skilling will 100% be an Elite Clue at the full rate, correct? (...)] No, the elite rate wouldn't be changed by that. It rolls for each *eligible* tier independently of the others; you simply wouldn't be doing a roll for beginner/easy/medium/hard clues, but this wouldn't affect your chance of getting an elite one."
^ Jagex. Mod Ash's Twitter account. 6 March 2023. Archived from the original on 6 March 2023. Mod Ash: "[(...) Then is it 1. Base chance 2. CA buff 3. Level formula 4. Clue tier multiplier] Ah, yes - that seems right."
^ Jagex. Mod Ash's Twitter account. 22 September 2022. Archived from the original on 10 June 2023. Mod Ash: "The formula for dropping clue nests only benefits from visible boosts. So the +7 invisible one won't help, but a visible boost would help beyond 99 if you can get one."
^ Jagex. Mod Tide's Twitter account. 24 May 2019. Archived from the original on 24 May 2019. Mod Tide: "I know its been a while since the clue expansion but here is the information on clue scroll drop rates and loot chances! If anything changes I will keep you posted. [1]"
^ Jagex. Mod Ash's Twitter account. 6 March 2023. Archived from the original on 6 March 2023. Mod Ash: "Looks like you multiply the chance denominator by Beginner: 0.2 Easy: 1.7 Medium: 2.0 Hard: 3.3 Elite: 10.0 e.g. if the chance had been 1/100, for a beginner that'd become 1/20, and for an elite it'd become 1/1000."

[1] Jagex. Mod Ash's Twitter account. 4 March 2023. Archived from the original on 6 March 2023. Mod Ash: "I did some spot-checking of the Wiki pages and the "base chance" numbers still look correct there, as does the formula for how your level is applied. The CA buff is applied to the "base chance" number *before* the formula is applied."

[2] Jagex. Mod Ash's Twitter account. 24 August 2023. Archived from the original on 24 August 2023.

[3] Jagex. Mod Ash's Twitter account. 13 March 2023. Archived from the original on 30 July 2023. Mod Ash: "[Oh, one more thing - I'm guessing double fish from Rada Blessing and Spirit Flakes don't result in another Clue Bottle roll, correct?] They do not. You're welcome :)"

[4] Jagex. Mod Ash's Twitter account. 11 March 2023. Archived from the original on 15 July 2023. Mod Ash: "[For Clue Geodes, Bottles, and Nests, if you already have a Beginner, Easy, Medium, and Hard Clues in the bank, the next clue received from skilling will 100% be an Elite Clue at the full rate, correct? (...)] No, the elite rate wouldn't be changed by that. It rolls for each *eligible* tier independently of the others; you simply wouldn't be doing a roll for beginner/easy/medium/hard clues, but this wouldn't affect your chance of getting an elite one."

[5] Jagex. Mod Ash's Twitter account. 6 March 2023. Archived from the original on 6 March 2023. Mod Ash: "[(...) Then is it 1. Base chance 2. CA buff 3. Level formula 4. Clue tier multiplier] Ah, yes - that seems right."

[6] Jagex. Mod Ash's Twitter account. 22 September 2022. Archived from the original on 10 June 2023. Mod Ash: "The formula for dropping clue nests only benefits from visible boosts. So the +7 invisible one won't help, but a visible boost would help beyond 99 if you can get one."

[7] Jagex. Mod Tide's Twitter account. 24 May 2019. Archived from the original on 24 May 2019. Mod Tide: "I know its been a while since the clue expansion but here is the information on clue scroll drop rates and loot chances! If anything changes I will keep you posted. [1]"

[8] Jagex. Mod Ash's Twitter account. 6 March 2023. Archived from the original on 6 March 2023. Mod Ash: "Looks like you multiply the chance denominator by Beginner: 0.2 Easy: 1.7 Medium: 2.0 Hard: 3.3 Elite: 10.0 e.g. if the chance had been 1/100, for a beginner that'd become 1/20, and for an elite it'd become 1/1000."

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Clue bottle

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