- Musa Point (Karamja, on the fishing dock)
- Fishing Guild (level 68 Fishing required to enter; members only)
- Catherby (the shore East of the bank, members only)
- Piscatoris Fishing Colony (requires Swan Song; members only)
- Rellekka (members only)
- Wilderness (East part on the shore, level 36/37).
Additionally, 3 Raw tuna may in turn be transmuted into a Raw bass, requiring level 46 Divination and 2 Sparkling energy which yields 9.6 experience.
At level 64 Cooking you will stop burning tuna, or 63 while wearing Cooking gauntlets.
Although Raw tuna are sold at various fishing shops (Gerrant's, Roachey's, Charley's, and Fishmonger's shop for example), the base stock is always 0.
With an Agility level of 35 or higher, you have a chance of fishing 2 Raw tuna in one go, but you only receive experience for one.