Rainbow fish

A rainbow fish is a food item that heals 875 life points in one bite. Players can make it by cooking a raw rainbow fish on a range or a fire. Doing so requires level 35 Cooking and grants 121 Cooking experience if successful. Players stop burning rainbow fish at level 62 Cooking.

The rainbow fish is nowhere near as popular as other fish, such as the lobster, which heals 1200 life points and is usually cheaper. The fish is easier to obtain if you are not considering the option of buying food, as this can be fished at the fishing spots near the Barbarian Village, at a lower Fishing level, and faster. This is also close to the Grand Exchange and Varrock. You are required to use stripy feathers to catch them.

Rainbow fish can also be looted from Gourmet implings.

Trivia

 * Despite being called rainbow fish, they only have four colours (yellow, light blue/turquoise, dark blue, and grey).
 * Free players used to be able to catch these fish until an update on 7 November 2011.

‎Rainbow fish Rainbow fish