Infernal eels are members-only fish that can be caught within the city of Mor Ul Rek. Catching them requires a Fishing level of 80, granting 95 Fishing experience per eel caught. In order to catch infernal eels, an oily fishing rod and bait while wearing ice gloves are required. With a hammer, these eels can be cracked open to extract ten to twenty Tokkul, one onyx bolt tip, or one to five lava scale shards.
Because they are located in the inner city, they can only be caught once a player has proven themselves worthy enough to enter the city by showing a TzHaar guard guarding the entrance a fire cape.
There is an “Eat” option on the eel, which results in the following message in the chatbox: Removing the eel from the lava has caused it to harden. You don’t want to test your teeth against one of these.
It is highly recommended to fish infernal eels in the south-easternmost area of the city, as the other two areas may have their fishing spots disappear more often. Fishing infernal eels gives the player around 35,000 Fishing experience per hour1. Preliminary rates show around a 1/16 chance of receiving onyx bolt tips and a 1/12 chance of receiving lava scale shards. Based on a sample size of 4500 infernal eels the average amount of lava scale shards received is about 0.33 per infernal eel, the average amount of onyx bolt tips is about 0.06 per infernal eel, and the average amount of Tokkul is about 14 per infernal eel.
When compared to monkfish, the advantage of infernal eels is that no banking is required, it requires less attention and can provide profit for ironmen through onyx bolt tips when fletched and alched, as well as providing Hardcore ironmen and Ultimate ironmen a way to obtain lava scale shards without the dangers of lava dragons. Overall, for regular accounts, infernal eels give lower experience and greater profit.