Fish Size

Calculating Fish Size

Each large fish has a minimum and maximum length value specified by the game code. When you hook a fish, the game first selects two random numbers from that range and takes the average of them to determine the length of the fish. This results in a triangular distribution, where values in the middle of the range are much more common than those closer to the min/max values.

Once the size is determined, the game then calculates the weight by multiplying the size by a random value between 4.65 and 5.15. Thus, even though the game code does not specifically state a min and max value for weight, we can calculate them by multiplying the minimum length by 4.65, and the maximum length by 5.15.

For a full list of values for each fish, please see the table below.

Fish Size Statistics

Fish	Length [Im] (Min-Max)	Weight [Pz] (Min-Max)	Used in Fish Ranking?	Skill Cap	NPC Price
Abaia	269 - 317	1239 - 1633	X	100	1,958
Ahtapot	55 - 145	255 - 747	X	90	714
Armored Pisces	50 - 125	232 - 644	Check	100	973
Bhefhel Marlin	60 - 140	278 - 721	Check	61	307
Bladefish	40 - 120	186 - 618	Check	71	408
Cave Cherax	115 - 235	533 - 1210	Check	100	1,632
Emperor Fish	60 - 180	278 - 927	Check	91	615
Gavial Fish	40 - 130	186 - 670	Check	81	512
Gerrothorax	210 - 250	974 - 1288	X	100	847
Giant Catfish	40 - 130	186 - 670	Check	31	102
Giant Chirai	75 - 170	348 - 875	Check	100	1,122
Giant Donko	45 - 150	209 - 232	Check	50	195
Gigant Octopus	88 - 167	408 - 860	X	80	238
Gigant Squid	65 - 170	302 - 876	Check	91	615
Grimmonite	55 - 145	255 - 747	Check	90	717
Gugru Tuna	40 - 120	186 - 618	Check	41	100
Gugrusaurus	145 - 425	673 - 2189	Check	100	1,795
Jungle Catfish	40 - 110	186 - 567	Check	80	612
Lakerda	55 - 100	255 - 515	X	41	103
Lik	185 - 465	858 - 2395	Check	100	1,795
Matsya	163 - 331	756 - 1705	X	100	25,688
Megalodon	446 - 625	2069 - 3219	X	93	1,086
Mola Mola	110 - 200	510 - 1030	X	100	975
Monke-Onke	45 - 115	209 - 592	Check	52	450
Pirarucu	161 - 210	747 - 1082	X	89	1,052
Pterygotus	25 - 260	116 - 1339	X	99	795
Rhinochimera	10 - 90	47 - 464	X	72	612
Ryugu Titan	200 - 490	928 - 2523	Check	100	1,500
Sea Zombie	80 - 195	371 - 1004	Check	100	700
Takitaro	55 - 130	255 - 670	Check	100	714
Three-eyed Fish	50 - 120	232 - 618	Check	80	512
Titanic Sawfish	75 - 210	348 - 1082	Check	100	1,652
Titanictus	75 - 210	348 - 1082	Check	100	714
Tricorn	105 - 210	487 - 1082	Check	100	1,620
Turnabaligi	65 - 175	302 - 901	X	100	653
Veydal Wrasse	40 - 125	186 - 644	X	52	675

• NPC prices vary between regular merchants and Guild Merchant that pay more. Note: Prices may vary on Horizon.

See Also

• Fish Ranking