Archive for August, 2017


TAXONOMY
Kingdom:  Animalia
Phylum:  Chordata
Class:  Actinopterygii (ray-finned fishes)
Order:  Scorpaeniformes  (Scorpionfishes and flatheads)
Family:  Sebastidae    (Rockfishes, Rockcods, and Thornyheads)

Genus/species:   Sebastes nebulosus

GENERAL CHARACTERISTICS: Body blue or black, mottled with yellow with some individuals being white ventrally. A broad yellow stripe from about the 3rd dorsal spine runs into or along the lateral line. Pelvic, anal and caudal fins are dark.

Length up to 45 cm (18 in), weight to 1.7 kg (3.75 lbs)

 

DISTRIBUTION/HABITAT: Southeast Alaska to Southern California. Lives among rocky shores along exposed coasts to depths of 3–138 m (10-450 ft). S. nebulosus lurks solitarily in caverns and among crevices, resting  benthically on their fins. They Often remain on their “homesite” for many years.

DIET IN THE WILD: Preys upon fishes, crustaceans (including amphipods, crabs and shrimps), brittlestars and mollusks (including gastropods, squid and octopuses).

REPRODUCTION: Fertilization internal

MORTALITY: Can live to at least 79 years

CONSERVATION: IUCN, Not evaluated

REMARKS: One of the tastiest rockfishes, but infrequently in markets because it is rarely caught. All rockfishes have venomous spines on dorsal, pectoral and anal fins. Not so toxic as scorpionfishes venom, but still capable of inflicting a painful sting. Sebastes is Greek for “magnificent.” Nebulosus is Latin for “clouded.”

References:

Eschmeyer, W.N., E.S. Herald and H. Hammann, 1983. A field guide to Pacific coast fishes of North America. Houghton Mifflin Company, Boston, U.S.A. 336 p.

California Academy of Sciences Steinhart Aquarium California Rocky Coast 2017

fishbase: www.fishbase.org/summary/3984

Probably More Than You Want To Know About The Fishes Of The Pacific Coast, Milton Love 1996 Really Big Press ppg 177-178

Ron’s flickr   http://www.flickr.com/photos/cas_docents/sets/72157608333101710/

Ron’s WordPress Shortlink  http://wp.me/p1DZ4b-Bk

eol eol.org/pages/209609/details

 

 

California Coast CC06

TAXONOMY
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii (ray-finned fishes)
Order: Scorpaeniformes (Scorpionfishes and flatheads)
Family: Sebastidae (Rockfishes, rockcods and thornyheads)

Genus/species: Sebastes auriculatus

GENERAL CHARACTERISTICS: Light brown mottled with dark brown; a dark blotch on upper portion of opercle, Fins are dusky-pink. The underside of throat and lower jaw are pinkish.  The rear area of the gill cover (opercule) with the prominent dark patch probably inspired its Latin name auriculatus, meaning eared.

Length up to 56 cm 22 inches

DISTRIBUTION/HABITAT: Southern Baja California to the northern Gulf of Alaska. Brown Rockfish are commonly found as bottom dwellers from shallow subtidal waters 20 ft. (6 m) to 444 ft. (135 m).

DIET IN THE WILD: Small fishes, crab, shrimp, and other small invertebrates.

REPRODUCTION: Viviparous, with planktonic larvae and pelagic juveniles. All are mature at 15 inches or 5 years of age.

LONGEVITY: Up to 34 years

REMARKS: Fin spines are sharp and mildly venomous and can cause annoying wounds.

Small live specimens make excellent bait for large lingcod. Flesh is firm and tasty, but rarely found in markets

References

Ron’s flickr https://www.flickr.com/photos/cas_docents/35972127564/in/dateposted-public/

California Academy of Sciences Steinhart Aquarium California Coastal Marine 2017

Eschmeyer, W.N., E.S. Herald and H. Hammann, 1983. A field guide to Pacific coast fishes of North America. Boston (MA, USA): Houghton Mifflin Company. p.134

 fishbase www.fishbase.org/summary/Sebastes-auriculatus

Probably More Than You Want To Know About The Fishes Of The Pacific Coast, Milton Love 1996 Really Big Press ppg. 146-148

Ron’s WordPress Shortlink: http://wp.me/p1DZ4b-Da

TAXONOMY
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii (ray-finned fishes)
Order: Scorpaeniformes (Scorpionfishes and flatheads)
Family: Sebastidae (Rockfishes, rockcods and thornyheads)

Genus/species: Sebastes paucispinis

GENERAL CHARACTERISTICS: The long jaw which extends to the eye socket is distinctive. Adults’ backs range in color from olive to burnt-orange with pink & red stomachs. Juveniles are light bronze with small brown spots on their sides. Coloring darkens and spots disappear as they mature.

World record: 90 cm (35 in), 9.5 kg (20 lbs)

DISTRIBUTION/HABITAT: Found from Alaska to Baja California in almost all habitats. Bocaccio rockfish from age 1 – 3 years are relatively pelagic becoming more demersal (bottom oriented) as they age. Oil platforms are now a somewhat important artificial habitat for the species.

Depth: 40 – 300 m (130 – 980 ft)

DIET IN THE WILD: The Bocaccio Rockfish is a voracious carnivore of other fishes including rockfishes.

TAXONOMY Class: Actinopterygii (ray-finned fishes) Order: Scorpaeniformes (Scorpionfishes and flatheads) Family: Sebastidae (Rockfishes, rockcods and thornyheads) Genus/species: Sebastes paucispinis5426914107_560c411740_b

REPRODUCTION: Maturity occurs at 4–5 years of age. S. paucispinis are viviparous like all rockfishes, with internal fertilization and embryo development. Females give birth to live larval young.

LONGEVITY: up to 30-50 years.

 

PREDATORS; Seabirds feed on juveniles. Marine mammals are common predators of adults.

CONSERVATION: IUCN; Critically Endangered due to overfishing using trawling and gill netting which was curtailed in 1998. Because the species is slow-growing and late maturing, recovery will take many years. These fish are still being caught as bycatch in other fisheries.

REMARKS: Great sport fish and good eating. Like many rockfish species, the spines of Bocaccio can be mildly poisonous and cause unpleasant pain if you are unlucky enough to get poked by one!

References

Ron’s flickr https://www.flickr.com/photos/cas_docents/7805276558/in/album-72157608359804936/

Pacific Coast Fishes Eschmeyer and Herald 1983 Easton Press page 145

California Academy of Sciences Steinhart Aquarium California Coastal Marine 2017

fishbasewww.fishbase.org/Summary/speciesSummary.php?ID=3987&A… bokacio

 eol eol.org/pages/209611/details

Probably More Than You Want To Know About The Fishes Of The Pacific Coast, Milton Love 1996 Really Big Press ppg 179-182

WASHINGTON DEPARTMENT OF FISH AND WILDLIFE: http://wdfw.wa.gov/fishing/bottomfish/identification/rockfish/s_paucispinis.html

Ron’s WordPress Shortlink wp.me/p1DZ4b-D6

TAXONOMY
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii (ray-finned fishes)

Order: Scorpaeniformes (Scorpionfishes and flatheads)
Family: Sebastidae (Rockfishes, rockcods and thornyheads)

Genus/species:  Sebastes mystinus

GENERAL CHARACTERISTICS
Mottled blue-black to bright blue with two to four dark bands which curve around the front of the head. Sloping band from the eye toward the pectoral fin with a smaller band below. Rear edge of the anal fin is straight and slanted. 

Length up to 61.0 cm (24 in)

Weight up to max. published weight: 3.8 kg (8.4 lbs)

 

DISTRIBUTION/HABITAT: S. mystinus is found along the coast from Alaska to Baja California. May be found near the surface or off the bottom, generally over shallow reefs, but also around kelp and over deep reefs. Form schools, sometimes with other rockfishes.

Sebastes mystinus4329897153_34929592a1_b

DIET IN THE WILD: Jellyfish, krill, copepods, fishes, hydroids and kelp. Larger blues eat relatively more fishes.

REPRODUCTION: S. mystinus matures between 6–9 years. Fertilization is internal with copulation and transfer of sperm via a modified urogenital papilla on the male.
The females store sperm in the ovaries for several months until ovulation then fertilization of the eggs occurs. They are viviparous. The larvae mature in shallow water.

LONGEVITY: up to 44 years 

PREDATORSAdults are preyed upon by other rockfish, lingcod, sharks, dolphins and sea lions.  

CONSERVATION: IUCN Not evaluated  

REMARKS: Blues are an important sports catch in California. During some years they represent up to 31% of all fishes taken in the marine recreational fisheries.

References  

Ron’s flickr http://www.flickr.com/photos/cas_docents/7564777760/in/set-72157608333101710/

fishbase  http://www.fishbase.org/summary/3983

California Academy of Sciences Steinhart Aquarium California Rocky Coast  2017

Pacific Coast Fishes Eschmeyer and Herald 1983 Easton Press page 144

eol eol.org/pages/211617/details

Probably More Than You Want To Know About The Fishes Of The Pacific Coast, Milton Love 1996 Really Big Press p175-177

Ron’s WordPress Shortlink  http://wp.me/p1DZ4b-CF

TAXONOMY
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii (ray-finned fishes0
Order: Scorpaeniformes (Scorpionfishes and flatheads)
Family: Sebastidae (Rockfishes, rockcods and thornyheads)

Genus/species: Sebastes melanops

NOTE Eschmeyer (CAS curator emeritus) and others recognize Sebastidae as a separate family that includes only the rockfishes. Others place rockfish together with scorpionfish in the
single family Scorpaenidae.

GENERAL CHARACTERISTICS: Black to blue-black mottled with gray. Some individuals have lighter patches on back and a gray lateral stripe from head to tail. It is originally all-black, but turns a mottled gray on the sides with age, often nearing white. Lacks the dark head bands of the blue rockfish; also has more gray, a smaller mouth, and a longer jaw than the blue.

Length up to 64 cm (25 in)

 

DISTRIBUTION: West Coast of North America (Eastern Pacific: Amchitka Island, Aleutian Islands, Alaska to Paradise Cove, Baja California, Mexico) where populations are stable.

Found down to a depth of 366 m.

DIET IN THE WILD: Fishes

REPRODUCTION: Sebastes sp. rockfish are slow-growing and extremely long-lived with black rockfish becoming sexually mature only after 6 to 8 years of age (max. reported age: 50 years). They have an elaborate courtship display followed by copulation and transfer of sperm via a modified urogenital papilla on the male. 
The females store sperm in the ovaries for several months until ovulation then fertilization of the eggs. They are viviparous. The larvae mature in shallow water. Reference: http://link.springer.com/article/10.1007/s10641-006-9170-9#page-1

LONGEVITY: up to 36 years

CONSERVATION: IUCN; Not evaluated

 

References

Ron’s flickr  http://www.flickr.com/photos/cas_docents/sets/72157608333101710/

Pacific Coast Fishes Eschmeyer and Herald 1983 Easton Press page 143

California Academy of Sciences, Steinhart Aquarium, California Rocky Coast 2017 

fishbase http://www.fishbase.org/summary/3979

Probably More Than You Want To Know About The Fishes Of The Pacific Coast, Milton Love 1996 Really Big Press pages 171-173

eol eol.org/pages/209605/hierarchy_entries/27948249/details#m…

Ron’s WordPress Shortlink http://wp.me/p1DZ4b-CP

 

TAXONOMY
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii (ray-finned fishes0
Order: Scorpaeniformes (Scorpionfishes and flatheads)
Family: Sebastidae (Rockfishes, rockcods and thornyheads)

Genus /Species; Sebastes chrysomelas

GENERAL CHARACTERISTICS: S. chrysomelas is dark brown-black with irregular clear yellow blotches on its back, lateral line and lower sides. Clear areas tend to run together on the lower sides with a yellow patch on membranes between anterior dorsal spines.

DISTRIBUTION/HABITAT: Eureka, California to Isla Natividada, Baja California, Mexico.
The Black and Yellow Rockfish is marine,feeds on bottom (demersal)  and is considered a kelp forest or inshore rockfish species. It is found from the intertidal zone down to 37 m (150 ft) but are most common in waters less than 18 m (50 ft) in kelp beds and rocky areas.

DIET IN THE WILD: It is a nocturnal feeder, ambushing its prey between dusk and dawn.

REPRODUCTION: Viviparous, live-bearing, fish. Females mature between 3 and 6 years of age and males between 3 and 4 years of age.

LONGEVITY: 22 years

CONSERVATION: Not Evaluated

REMARKS: Gopher rockfish are extremely closely related to the Black and Yellow Rockfish. S. chrysomelas is darker brown with yellow patches, and tends to prefer shallower water. S. carnatus (Gopher rockfish) has pinkish spots on a brown background, The two types are apparently genetically indistinguishable, and may represent a single species with two color morphs.

 References: 

Ron’s flickr https://www.flickr.com/photos/cas_docents/35639373843/in/dateposted-public/

California Academy of Sciences Steinhart Aquarium California Coastal Marine 2017

Ron’s flickr www.flickr.com/photos/cas_docents/sets/72157608333101710/

fishbase www.fishbase.org/summary/3959

Ron’s WordPress shortlink wp.me/s1DZ4b-2497

ADW animaldiversity.org/accounts/Sebastes_chrysomelas/classif…

http://wp.me/p1DZ4b-1hp

 

Taken 10-9-2008, 10-4-12, 10-29-2014

TAXONOMY
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii (ray-finned fishes)
Order: Scorpaeniformes (Scorpionfishes and flatheads)
Family: Sebastidae (Rockfishes, rockcods and thornyheads)

Genus/species: Sebastes carnatus

 CHARACTERISTICS: They are generally mottled appearance, with dark areas generally olive to reddish-brown, and the lighter areas being white or pinkish. The upper part of the back almost always has three light patches extending into the dorsal fins, and the lighter areas become more extensive ventrally.

Length: Up to 39.0 cm (15 inches).

 

DISTRIBUTION/HABITAT: Pacific coast from Oregon, to southern Baja California. S. carnatus is found in intertidal zone, but most occur at depths of 12–80 m (40-250 ft), living in crevices and holes during the day, and ranging further abroad at night.

 

REPRODUCTION: Viviparous, with planktonic larvae

LIFESPAN: 30 years.            

CONSERVATION: IUCN, not evaluated. 

REMARKS: Gopher Rockfish are extremely closely related to the Black-and-Yellow Rockfish. S. chrysomelas is darker brown or black with yellow patches, and tends to prefer shallower water. S. carnatus has pinkish spots on a brown background, The two types are apparently genetically indistinguishable, and may represent a single species with two color morphs. The two species are otherwise identical.

Color of life note: Rockfishes have disruptive camouflage which helps them blend in to that textured and hued background.
References

California Academy of Sciences Color of life Exhibit 2015

Ron’s WordPress shortlink  http://wp.me/s1DZ4b-2497

California Academy of Sciences Steinhart Aquarium California Coastal Marine Exhibit 2017

Ron’s flickr  http://www.flickr.com/photos/cas_docents/sets/72157608333101710/

BioOne www.bioone.org/doi/abs/10.1643/CG-02-061R2?journalCode=cope

eol eol.org/pages/215479/details

fishbase www.fishbase.org/summary/3956

TAXONOMY
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii (ray-finned fishes)
Order: Scorpaeniformes (Scorpionfishes and flatheads)
Family: Sebastidae (Rockfishes, rockcods and thornyheads)

Genus/species: Sebastes pinniger

GENERAL CHARACTERISTICS: The Canary Rockfish is bright yellow to orange mottled on a light gray background with 3 orange stripes across head and orange fins. The Lateral line is in a clear area. The pectoral, pelvic, and anal fins are moderately pointed and are large.

Length up to 76 cm (2.5 ft)

 

DISTRIBUTION/HABITAT: They are found from Alaska to Baja California, Mexico.
S. pinniger adults hover in loose groups above rocky bottoms at average depths of 80–200 m (264-660 ft).

DIET IN THE WILD: They feed on small fishes and krill.

REPRODUCTION: they are mature at 14 in (36 cm) or 5-6 years old., Fertilization: Internal fertilization, ovoviviparous

LONGEVITY: Up to 75 years

CONSERVATION: IUCN Not Evaluated
Minimum population doubling time 4.5 – 14 years. Various state restrictions on fishing have been put in place over the years, including banning retention of canary rockfish in Washington in 2003. Because this species is slow-growing, late to mature, and long-lived, recovery from these threats will take many years, even if the threats are no longer affecting the species.

REMARKS: The Vermillion Rockfish which is similar is more reddish and the lateral one is not in the grey zone.

References

Ron’s flickr Rockfishes https://www.flickr.com/photos/cas_docents/7786389830/in/album-72157608359804936/

Ron’s flickr Canary Rockfish http://www.flickr.com/photos/cas_docents/sets/72157608359804936/with/7564182434/

California Academy of Sciences Steinhart Aquarium California Rocky Reef 2017

PacificCoast Fishes Eschmeyer and Herald 1983 Easton Press page 146

fishbase www.fishbase.org/summary/3989

NOAA FISHERIES 2-3-17 www.fisheries.noaa.gov/pr/species/fish/canary-rockfish.html

Ron’s WordPress shortlink wp.me/p1DZ4b-Dm

 

 

TAXONOMY
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii (ray-finned fishes)
Order: Perciformes (Perch-likes)
Family: Embiotocidae (Surfperches)

Genus/species; Hyperprosopon argenteum

GENERAL CHARACTERISTICS: Thin-bodied, football-shaped profile with large eyes (about 1/3 of head length). Silver, often with bluish or greenish tints; may display dusky bars and black edges on caudal and anal fins. The caudal (tail) fin is forked. Dorsal fins are continuous, not notched and the pelvic fins have black tips.

Length to 30 cm (12 inches).

WalleyedSurfperch4330632348_5a0a951c76_b

DISTRIBUTION/HABITAT: H. argenteum are found from Vancouver Island, British Columbia, Canada to central Baja California, Mexico. They are located in the surf on sand beaches and over sand near rocks, to 18 m (60 ft) often in dense rapidly swimming schools.

DIET IN THE WILD: Small crustaceans

REPRODUCTION: Fertilization is internal. Viviparous; bear 5–12 young; newborns about 3.8 cm (1.5 in) long

LONGEVITY: Up to 6 years

CONSERVATION: IUCN: Not evaluated

REMARKS: Walleye Surfperch are important commercial and sport fish.

References

Ron’s WordPress shortlink  http://wp.me/p1DZ4b-1jZ

California Academy of Sciences Steinhart Aquarium California Rocky Coast 2017

PacificCoast Fishes Eschmeyer and Herald, Easton Press 1983, page 230

Ron’s flickr  https://www.flickr.com/photos/cas_docents/36360564855/in/album-72157608359804936/

CA Dept. of Fish and Wildlife  www.dfg.ca.gov/marine/sfmp/surfperch-id.asp

eol  eol.org/pages/207481/details

fishbase  www.fishbase.org/summary/3631

 

TAXONOMY
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Embiotocidae (Surfperches)

Genus/species: Rhacochilus toxotes

 Rubberlip Surfperch14903173973_a0105891ee_k

GENERAL CHARACTERISTICS: Silvery blue to purplish on dorsal surface; pectoral fins yellowish; pelvic fins black or dusky fringed with black; prominent lips thick, pink or white. The lower jaw is slightly shorter than the upper. Juveniles have one or two vertical dusky bars on the body, usually are not found on adults.The largest of the surfperches, up to 19 inches long. A 16.5 inch specimen weighed 3 pounds.

DISTRIBUTION/HABITAT: Rubberlip Surfperch are found in the Eastern North Pacific: Cape Mendocino, California to Central Baja California generally favoring inshore waters with rocky shelves and extensive kelp beds.

DIET IN THE WILD: R. toxotes is an oral “winnowers” (to blow upon) sifting out thin-shelled invertebrates from the substrate; occasionally eat mollusks and algae.

REPRODUCTION: Like all surfperches, they are viviparous with young highly developed and free-swimming at birth.

CONSERVATION: IUCN: Not evaluated.

REMARKS: Overall population decline. Small commercial fishery in Southern California; most caught by sport fishermen who seek out the larger, mature females.

References

Ron’s flickr https://www.flickr.com/photos/cas_docents/36298592766/in/album-72157608359804936/

California Academy of Sciences Steinhart Academy California Rocky Reef 2017

fishbase www.fishbase.org/summary/3639

eol eol.org/pages/357017/details

CA Dept. of Fish and Wildlife www.dfg.ca.gov/marine/mspcont2.asp

Ron’s WordPress shortlink http://wp.me/p1DZ4b-1jL

 

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