A Strong fishing urn can be created at 53 Crafting while fishing with a strong fishing urn (r) in your inventory, and is used with the Fishing skill to help with gaining experience. The urn is filled when the player has earned 3,000 Fishing xp with the urn in inventory. Once the strong fishing urn is full, it becomes a strong fishing urn (full) and can be teleported to Ernie for 600 Fishing experience.
If catching two fish at once with high Agility, the urn only fills with xp from the first catch. The second does not count.
Only 10 Strong fishing urns can be kept before continuing.
Strong fishing urn gives you 20% more exp per fish.
Many different fish may be caught. The following are only examples.
| Fish | Level | Experience | % filling | # to fill | |
|---|---|---|---|---|---|
 | Raw shrimps | 1 | 10 | 0.3 | 300 |
 | Raw crayfish | 1 | 10 | 0.3 | 300 |
 | Raw minnow | 1 | 10 | 0.3 | 300 |
 | Raw karambwanji | 5 | 5 | 0.1 | 600 |
 | Raw sardine | 5 | 20 | 0.6 | 150 |
 | Raw herring | 10 | 30 | 1 | 100 |
 | Raw anchovies | 15 | 40 | 1.3 | 75 |
 | Raw mackerel | 16 | 20 | 0.6 | 150 |
 | Raw trout | 20 | 50 | 1.6 | 60 |
 | Raw cod | 23 | 45 | 1.5 | 67 |
 | Raw pike | 25 | 60 | 2 | 50 |
 | Slimy eel | 28 | 65 | 2.1 | 47 |
 | Raw salmon | 30 | 70 | 2.3 | 43 |
 | Frog spawn | 33 | 75 | 2.5 | 40 |
 | Raw tuna | 35 | 80 | 2.6 | 38 |
 | Raw rainbow fish | 38 | 80 | 2.6 | 38 |
 | Raw cave eel | 38 | 80 | 2.6 | 38 |
 | Raw lobster | 40 | 90 | 3 | 34 |
 | Raw bass | 46 | 100 | 3.3 | 30 |
 | Leaping trout | 48 | 50 | 1.6 | 60 |
 | Raw swordfish | 50 | 100 | 3.3 | 30 |
 | Raw desert sole | 52 | 60 | 2 | 50 |
 | Raw lava eel | 53 | 30 | 1 | 100 |
 | Leaping salmon | 58 | 70 | 2.3 | 43 |
 | Raw catfish | 60 | 85 | 2.8 | 36 |
 | Raw monkfish | 62 | 120 | 4 | 25 |
 | Raw karambwan | 65 | 105 | 3.5 | 29 |
 | Magnetic minnow | 68 | 140 | 4.6 | 22 |
 | Raw green blubber jellyfish | 68 | 165 | 5.5 | 19 |
 | Leaping sturgeon | 70 | 80 | 2.6 | 38 |
| Cooking | |
| Divination |
 Cracked Fragile Plain Strong Decorated |
| Farming |
 Cracked Fragile Plain Strong Decorated |
| Fishing |
 Cracked Fragile Plain Strong Decorated |
| Hunter |
 Cracked Fragile Plain Strong Decorated |
| Mining |
 Cracked Fragile Plain Strong Decorated |
| Prayer |
 Impious Accursed Infernal |
| Runecrafting |
 Cracked Fragile Plain Strong Decorated |
| Smithing |
 Cracked Fragile Plain Strong |
| Woodcutting |
 Cracked Fragile Plain Strong Decorated |
