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In breathing, the mouth and gills of a fish open alternately; the water entering the mouth escapes by the opening of the gills. Shown is a section of the bronchial arch of a cod, with a pair processes supporting leaflets or plates. Labels: 1. A section of the branchial arch. 2, A pair of processes. 3, Branchial leaflets or plates. The number of leaflets in one process of the cod is about one thousand; in the salmon fourteen hundred; in the sturgeon sixteen hundred.

Section of a Branchial Arch of a Cod

In breathing, the mouth and gills of a fish open alternately; the water entering the mouth escapes by…

The burbot (Lota lota), is the only freshwater member of the cod family, gadidae. It is most common in streams and lakes of North America and Europe above 40°N latitude. They are fairly common in Lake Erie but are also found in the other Great Lakes.

Burbot

The burbot (Lota lota), is the only freshwater member of the cod family, gadidae. It is most common…

Cod fish.

Cod

Cod fish.

"The skull of a cod. b, branchiostegal rays born on c.h., the ceratohyal bone; d, dentary portion of the mandible; f, frontal; h.m., hyomandibular; i.o., interoperculum; l, lachrymal; m, maxilla; n, nasal; o, operculum; p.m., premaxilla; p.o., preoperculum; p.s., parasphenoid; q, quadrate; s.o., sub-operculum; s.oc., supra-occipital." — Galloway

Cod Skull

"The skull of a cod. b, branchiostegal rays born on c.h., the ceratohyal bone; d, dentary portion of…

"It is two to four feet long, and weighs from two to seventy spounds; the general color is greenish brown above, and silvery white beneath. It inhabits deep water, and is often taken a a depth of thirty fathoms." — Goodrich, 1859

Common Cod

"It is two to four feet long, and weighs from two to seventy spounds; the general color is greenish…

"Four to eight inches long; common in Europe, but rare on our coast." — Goodrich, 1859

Poor Cod

"Four to eight inches long; common in Europe, but rare on our coast." — Goodrich, 1859

"From one to two feet long, varies greatly in color; is common in the Baltic; also found occasionally on the British coasts." — Goodrich, 1859

Dorse

"From one to two feet long, varies greatly in color; is common in the Baltic; also found occasionally…

"The haddock is greatly valued for its flesh; it swims in immense shoals, and cast numbers are taken." — Goodrich, 1859

Haddock

"The haddock is greatly valued for its flesh; it swims in immense shoals, and cast numbers are taken."…

A species of sea-fish found in the northern seas as far north as Iceland. It is allied to the cod family. The body measures from three to four feet in length, has grayish sides and back, and the head is flat. The ling is very valuable as an article of commerce.

Ling

A species of sea-fish found in the northern seas as far north as Iceland. It is allied to the cod family.…

A cottoid fish, the armed bullhead.

Pogge

A cottoid fish, the armed bullhead.

An illustration of a cartoon swordfish talking to a cartoon cod fish.

Swordfish Talking to a Cod

An illustration of a cartoon swordfish talking to a cartoon cod fish.

A diphyceral tail of a spotted burbot fish.

Spotted Burbot Tail

A diphyceral tail of a spotted burbot fish.