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The blue perch. Up to 12 inches in length and having about 18 dorsal spines, conical teeth in several rows, seperate preoperculum, and scaly cheeks and opercles.

Cunner

The blue perch. Up to 12 inches in length and having about 18 dorsal spines, conical teeth in several…

"Hyoid bone of the Perch." — Encyclopedia Britannica, 1893

Hyoid Bone

"Hyoid bone of the Perch." — Encyclopedia Britannica, 1893

External features of a perch.

Perch

External features of a perch.

digestive, excretory, and reproductive systems of a perch.

Perch

digestive, excretory, and reproductive systems of a perch.

Circulatory system of a perch.

Perch

Circulatory system of a perch.

"An embiotocoid fish, with small scales, uniserial and jaw teeth, and lip free and deeply cut along its margin."-Whitney, 1902

Perch

"An embiotocoid fish, with small scales, uniserial and jaw teeth, and lip free and deeply cut along…

A genus of fish including many species, and found widely distributed both in salt and fresh water. They are especially abundant in the northern part of the United States and Canada, and are found in the ponds, rivers, and lakes of nothern Eurasia and off the coast of these and other regions.

Perch

A genus of fish including many species, and found widely distributed both in salt and fresh water. They…

"Brain of Perch. Upper aspect. a, cereoellum; b, optic lobes; c, hemispheres; e, lobi inferiores; f, hypophysis; g, lobi posteriores; i, olfactory lobes; n, nervus opticus; o, nervus olfactorius; p, nervus olulo-motorius; g, nervus trochlearis; r, nervus trigeminus; s, nervus acousticus; t, nrvus vagus; u, nervus abducens; v, fourth ventricle." — Encyclopedia Britannica, 1893

Perch Brain

"Brain of Perch. Upper aspect. a, cereoellum; b, optic lobes; c, hemispheres; e, lobi inferiores; f,…

"Brain of Perch. Lower aspect. a, cereoellum; b, optic lobes; c, hemispheres; e, lobi inferiores; f, hypophysis; g, lobi posteriores; i, olfactory lobes; n, nervus opticus; o, nervus olfactorius; p, nervus olulo-motorius; g, nervus trochlearis; r, nervus trigeminus; s, nervus acousticus; t, nrvus vagus; u, nervus abducens; v, fourth ventricle." — Encyclopedia Britannica, 1893

Perch Brain

"Brain of Perch. Lower aspect. a, cereoellum; b, optic lobes; c, hemispheres; e, lobi inferiores; f,…

"Fins of Common Perch. D, first dorsal; D', second dorsal; P, pectoral; V, ventral; A, anal; C, caudal." -Whitney, 1911

Fins of Common Perch

"Fins of Common Perch. D, first dorsal; D', second dorsal; P, pectoral; V, ventral; A, anal; C, caudal."…

"The bones of fishes are of a less dense and compact nature than in the higher order of animals; in some, indeed, they are wholly cartilaginous. The skeleton may in general be divided into four chief parts - the Vertical Column, the Head, the Repiratory Apparatus, and the Limbs" — Goodrich, 1859

Perch skeleton

"The bones of fishes are of a less dense and compact nature than in the higher order of animals; in…

"The spinal column consists of abdominal and caudal vertebre, the coalescence of the parapophyses into a complete hemal ring and the suspension of the anal fin generally forming a sufficiently well-marked boundary between the abdominal and caudal regions." — Encyclopedia Britannica, 1893

Perch Skeleton

"The spinal column consists of abdominal and caudal vertebre, the coalescence of the parapophyses into…

"Skeleton of Fish (Perch). a, intermaxillaries; b, nasal region; c, dentary bone of mandible; d, orbit of eye; e, supraoccipital crest; f, preoperculum; g, g', vertebral column; h, pectoral fin; i, ventral fin; k, first dorsal fin; l, second dorsal fin; m, anal fin; n, n, caudal fin, making a homocercal tail." -Whitney, 1911

Skeleton of Perch

"Skeleton of Fish (Perch). a, intermaxillaries; b, nasal region; c, dentary bone of mandible; d, orbit…

"Skeleton of the Perch's Skull." — Encyclopedia Britannica, 1893

Perch Skull

"Skeleton of the Perch's Skull." — Encyclopedia Britannica, 1893

"Lower view of skull of perch." — Encyclopedia Britannica, 1893

Perch Skull

"Lower view of skull of perch." — Encyclopedia Britannica, 1893

A food fish.

Blue Surf Perch

A food fish.

"A genus of acanthopterygian fishes, type of the family Anabantidæ."-Whitney, 1902

Climbing Perch

"A genus of acanthopterygian fishes, type of the family Anabantidæ."-Whitney, 1902

"One of the best and handsomest of the freshwater fishes of that quarter of the globe." — Goodrich, 1859

European Perch

"One of the best and handsomest of the freshwater fishes of that quarter of the globe." — Goodrich,…

A Pike Perch fish.

Pike Perch

A Pike Perch fish.

A fish with elongated form, subconical head, and sharp canines mixed with the villiform teeth from the jaws and palate.

Pike Perch

A fish with elongated form, subconical head, and sharp canines mixed with the villiform teeth from the…

This fish is of a dark olive color heavily dotted with black, and has two dark bars at the base of the caudal fin.

Pirate Perch

This fish is of a dark olive color heavily dotted with black, and has two dark bars at the base of the…

A surf fish

Surfperch

A surf fish

This is an illustration of the Yellow Perch. A perch is a freshwater bony fish belonging to the family Osteichthyes.

Yellow Perch

This is an illustration of the Yellow Perch. A perch is a freshwater bony fish belonging to the family…

Fishes are sometimes classed, in accordance with the structure of their scale, into Ctenoid, Ganoid, Cycloid, and Placoid. This is an illustration of a Ctenoid Scale of the Perch.

Ctenoid, Scale

Fishes are sometimes classed, in accordance with the structure of their scale, into Ctenoid, Ganoid,…

Skeleton of the common Perch. (p) one of the pectoral fins; (v) one of the ventral fins; (a) anal fin, (c) caudal fin; (d) first dorsal fin; (d) second dorsal fin; (i i ) interspinous bones.

Fish Skeleton

Skeleton of the common Perch. (p) one of the pectoral fins; (v) one of the ventral fins; (a) anal fin,…