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Triakis semifasciata
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Description |
Grayish with bronze tinge above, white below. Broad black
bars, saddles, and spots on back and side. Short, bluntly
rounded snout. Anal fin much larger than second dorsal fin.
Terminal lobe of caudal fin long, but less than half the
length of upper lobe. |
Size |
Males to 1.5 m. (5 ft.) Females to 2.1 m. (7 ft.). |
Range/Habitat |
Oregon to Baja and northern Gulf of California. |
Depth |
Usually less than 2 fm. but up to 50 fm. |
Credits |
Picture: NowPublic.com; Text: Peterson Field Guide to Pacific Coast Fishes |
Triakis semifasciata
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Description |
Body flattened with large pectoral fins expanded
laterally and separated from the head by a deep notch. The
notches, behind and on each side of the head, contain gill
openings. The two dorsal fins are located far back on the
body and near the caudal fin (tail). The head is blunt with
a wide terminal mouth. Nostrils and barbels are found at
the front part of the head. Grayish brown above with dark
spots on back. White below. |
Size |
to 1.5 m (5 ft.) |
Range/Habitat |
SE Alaska to Chile and Gulf of California, but uncommon
north of CA. Near reefs over sand or mud. |
Depth |
30 - 340 fm. |
Remarks |
10 - 600 ft. but usually inside 300 feet off
California. |
Credits |
Picture: Bill Barss, ODFW; Texts Love, Probably more than you want to know about the
fishers of the Pacific coast. And Peterson Field Guide to
Pacific Coast Fishes. |
Lamna ditropis
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Description |
Stout, with bluntly conical snout. Secondary keel below
rear of main caudal keel. First dorsal fin begins far
forward. Second dorsal fin small, above anal fin. Dark
bluish gray, gray-black, or mottled gray above; white
below. |
Size |
To 3 m. (10 ft.). |
Range/Habitat |
Japan to Bering Sea; Gulf of Alaska to central Baja. |
Depth |
Epipelagic, can be found just off shore. |
Other common names |
Mackeral Shark |
Credits |
Picture: Bill Barss, ODFW.
Text: Peterson Field Guide to Pacific Coast Fishes |
Galeorhinus galeus
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Description |
Snout long, pointed. Eye oval. 2nd dorsal fin nearly over
anal fin and about same size. Mouth (seen from bottom)
broadly arched. labial groove long but does not extend to
front of mouth. Terminal lobe of caudal fin extremely large,
about 1/2 the length of upper lobe. Teeth triangular,
sharp-edged, with susplets. Bluish to dusky gray above;
white below. Young under 2ft. (61 cm) have striking white
edge on pectoral fin; both dorsal fins black-tipped, with a
white spot; caudal fin black-tipped. |
Size |
Males to 1.8 m( 6 feet), 60 lb; females to 2 m (6.5
feet), 100 lb. |
Range/Habitat |
Temperate waters, nearly worldwide; northern B.C. to
central Baja; also Peru and Chile. |
Depth |
Offshore, also coastal and in bays; muddy shallows and to
225 fm. Females usually at less than 30 fm., males
deeper. |
Remarks |
Schooling, abundant, wide-ranging. |
Credits |
Picture: Bill Barss, ODFW
Text: Peterson Field Guide to Pacific Coast Fishes,
1983. |
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