Largest Fish Max Weights Comparison (KG Records)
Compare the 10 largest fish by max recorded weight, from the whale shark at 21,500 kg to gar at 137. Max weights with FishBase and IGFA sources listed.
Visual comparison
All values
Click any row to load it as Entry A.
| Name | Value | Context | Source |
|---|---|---|---|
| Whale Shark Largest fish in the world. | 21,500 kilograms | Rhincodon typus, filter feeder, max recorded | FishBase whale shark records: max 21,500 kg |
| Basking Shark 17,000 under whale shark. | 4,500 kilograms | Cetorhinus maximus, filter feeder | FishBase basking shark records: max 4,500 kg |
| Great White Shark 1,100 under basking shark. | 3,400 kilograms | Carcharodon carcharias, max recorded | FishBase great white records: max 3,400 kg |
| Ocean Sunfish Ranks above beluga; see notes. | 2,300 kilograms | Mola mola, heaviest bony fish | FishBase sunfish records: max 2,300 kg |
| Beluga Sturgeon Largest freshwater here. | 2,000 kilograms | Huso huso, Caspian Sea | FishBase beluga records: max 2,000 kg |
| Greenland Shark 400 year lifespan anchor. | 1,400 kilograms | Somniosus microcephalus, Arctic | FishBase Greenland shark records: max 1,400 kg |
| Atlantic Bluefin Tuna Priciest per kilo here. | 678 kilograms | Thunnus thynnus, rod and commercial max | IGFA bluefin records: max 678 kg |
| Mekong Giant Catfish Heaviest rod caught freshwater here. | 293 kilograms | Pangasianodon gigas, 646 lb record | IGFA Mekong records: 646 lb (293 kg) 2005 |
| Arapaima Ranks above gar; see notes on order. | 200 kilograms | Arapaima gigas, Amazon, kept for scale | FishBase arapaima records: max 200 kg |
| Alligator Gar 156 under Mekong. | 137 kilograms | Atractosteus spatula, US rivers | IGFA gar records: max 137 kg |
About this converter
Whale shark maxes 21,500 kg recorded, about 17,000 clear of basking shark at 4,500. Great white at 3,400, ocean sunfish at 2,300, beluga sturgeon at 2,000, Greenland shark at 1,400, bluefin tuna at 678, Mekong catfish at 293, arapaima at 200 for scale and alligator gar at 137 follow. Weights here are max recorded specimens, not averages. Animal Crossing bell prices rank game fish elsewhere, so real kilos keep this page. Mekong 646 lb converts to 293 kg exactly.
How to use it
Pick two fish and a unit in the top row. The three boxes below stay linked. Change any box and the other two update. Try whale shark against gar to see the 157 times gap. The bars below use a log scale since max runs 157 times min, so small bars stay visible. Switch the unit to pounds for US figures. Ratios are exact divisions of the max weights.
Ocean sunfish at 2,300 ranks above beluga at 2,000, and arapaima at 200 ranks above gar at 137 despite draft table quirks. Bony versus cartilaginous splits records since sunfish leads bony fish. Mekong 293 converts from the 646 lb rod record. Figures follow FishBase and IGFA max records. Averages run far lower.
FAQ
What is the largest fish?
Whale shark at 21,500 kg max recorded. Basking shark follows at 4,500.
Is this about the game?
No. Animal Crossing bell prices rank elsewhere. This page keeps real max kilos.
How heavy is a bluefin?
678 kg max recorded. Priciest per kilo in this table.
Why list arapaima?
For scale at 200 kg. Amazon giant against 21,500 kg whale shark.
Sources
- FishBase max recorded weights: whale shark 21,500; basking shark 4,500; great white 3,400; ocean sunfish 2,300; beluga sturgeon 2,000; Greenland shark 1,400; bluefin tuna 678; arapaima 200; alligator gar 137 kg
- IGFA rod records: Mekong giant catfish 646 lb (293 kg) 2005
Last verified: 2026-10-09 · 10 entries
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