Fallen Arm - the following locations have the highest spawn rate (21%) for Dark Fish:
- south of Jifum Beach; look for the hollowed area
- Transformer Area; on the map, look for the upper left corner of the room
- the room that is west of Ulna Passage, near the switch
- east of Inlet Beach; near the shoreline
- south of Inlet Beach; enter the pipe from Inlet Beach and then make a left U-turn when exiting the pipe. There is a spawn point nearby.
- Digit 1; the area is guarded by the Powerful Eligos
- north of Digit 1 Crevasse; go to the platform that touches the exterior wall of Hidden Machina Village. The spawn point is at the corner of the platform.
- upper area of the base of Digit 5; near the shoreline. The area is only accessible by swimming on the right side of Digit 5 and then make a left U-turn via the passage on the left
- Digit 5 Beach; the short passage at the middle
- on the map, the lower bridge of the Connecting Bridge
- the middle area of Digit 3; there is a shore to the right of the area
- east of Digit 2 Plain; on the map, look for the interior of the semi-circle structure. There is another spawn point south of the semi-circle structure. On the map, look for the dented area on the structure
- on the map, the bottom platform at the upper area of Digit 2. The area is only accessible by climbing up to high ground and jumping off high ground to the desired location
- Distant Fingertip; the area is guarded by the Wicked Sallos
- the high platforms at the end of Digit 2; climb on the walls and each platform has a passage that leads to the spawn points.