Tag Archive: California Coastal Marine


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

%d bloggers like this: