Fish fishing spots are found in the north-western section of the Deep Sea Fishing hub and are used for Fishing frenzy. Players can use the left-click Fling option on them with at least level 94 Fishing. This level can be boosted.
When fishing at these spots no fish are gained, instead the player gains only Fishing experience. Each time that experience is gained from the fishing spot its location changes. Continuously fishing from the spots gives a "streak" bonus of +1% xp boost for every 10 catches (up to 20% xp boost with a soft cap of 200 streak). The streak will be halved if the player is inactive for 6 seconds, and lost if the player is inactive for longer than 6 seconds. The Frenzied achievement is awarded upon gaining a 200 streak.
There is a chance that frenzy fish and calm fish fishing spots may spawn while fishing at these spots. Calm fish spots appear less "cloudy" than the others. They do not add to your streak but instead give rapid xp for the time being. Frenzy fish spots appear larger than normal spots.