List of largest fish

The largest living lobe-finned fish is the coelacanth. The average weight of the living West Indian Ocean coelacanth, (Latimeria chalumnae), is 80 kg (180 lb), and they can reach up to 2 m (6.6 ft) in length. Specimens can measure up to 110 kg (240 lb). The largest lobe-finned fish of all time was Hyneria at up to 5 m (16 ft).

The largest lungfish, the African lungfish (Protopterus aethiopicus), is smooth, elongated, and cylindrical with deeply embedded scales. The tail is very long and tapers at the end. They can reach a length of up to 2 m (6.6 ft) and may weigh as much as 50 kg (110 lb). The pectoral and pelvic fins are also very long and thin, almost spaghetti-like. The newly hatched young have branched external gills much like those of newts. After 2 to 3 months the young transform (called metamorphosis) into the adult form, losing the external gills for gill openings. These fish have a yellowish gray or pinkish toned ground color with dark slate-gray splotches, creating a marbling or leopard effect over the body and fins. The color pattern is darker along the top and lighter below.

The largest living bony fish (superclass Osteichthyes, which includes both ray-finned and lobe-finned fish) is the widely distributed ocean sunfish (Mola mola), a member of the order Tetraodontiformes. The record size sunfish crashed into a boat off Bird Island, Australia in 1910 and measured 4.3 m (14 ft) from fin-to-fin, 3.1 m (10 ft) in length and weighed about 2,300 kg (5,100 lb).

As to length, the longest extant bony fish on earth is the king of herrings or oarfish (Regalecus glesne). Slender and compressed, this fish averages over 6 m (20 ft) long at maturity. A specimen caught in 1885 of 7.6 m (25 ft) in length weighed 275 kg (606 lb). The longest known king of herrings, which was hit by a steamship, was measured as 13.7 m (45 ft) long, but unverified specimens have been reported up to 16.7 m (55 ft).

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Wikipedia