With a minimum Cooking level of 72, the fish can be dissected with a knife to extract Zulrah's scales. Dissecting the fish gives 3–9 scales and 109–127 Cooking experience (100 base XP plus 3 for each scale obtained). A player's Cooking level affects how many scales are received when they are dissected. The minimum, maximum, and average scales per level can be obtained from the table below. Furthermore, the sacred eels provide a relatively high chance (around 1/500, depending on your Fishing level) of obtaining Clue bottles.
With 90 Fishing and Cooking, you can expect to gain about 21,300 Fishing experience, 23,800 Cooking experience, and about 1,200 Zulrah's scales per hour.
With 97 Fishing and 99 Cooking, you can expect to gain about 23,500 Fishing experience, 26,400 Cooking experience, and about 1,500 scales per hour (about 200–225 eels).
The maximum amount of scales acquired from every dissected sacred eel increases in 8-level intervals, capping at a boosted level of 104 (9 scales).[1]
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