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Queenfish

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Seriphus politus

Also known as: White Croaker, Kingfish

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Description

Seriphus politus, commonly known as the Queenfish, is a small, schooling marine fish belonging to the family Sciaenidae (drums or croakers). It is characterized by its silvery body, elongated shape, and a distinctive dark spot at the base of the pectoral fin. This species is an important component of nearshore marine ecosystems along the Pacific coast of North America.

Physical Characteristics

Body shape
elongated
Coloration
Overall silvery, iridescent, with a darker bluish-gray dorsal surface fading to white on the belly. Fins are typically dusky or yellowish. A prominent, distinct black spot is present at the base of the pectoral fin.
Scale type
ctenoid
Mouth position
superior
Distinctive features
Elongated, compressed body, Large, oblique mouth, Two dorsal fins, deeply notched, Prominent black spot at the base of the pectoral fin, Lateral line curves upward anteriorly
Dorsal fin
Two dorsal fins; the first is spiny with 8-10 spines, and the second is soft-rayed with 1 spine and 20-24 soft rays. The two fins are deeply notched, almost appearing separate.
Tail fin
Moderately forked caudal fin.
Pectoral fin
Relatively long and pointed pectoral fins, with a distinct black spot at their base.
Distinctive fins
Anal fin with 2 spines and 20-23 soft rays. Pelvic fins are thoracic.

Identification Tips

Pectoral Fin Spot

The most reliable distinguishing feature is the prominent, dark black spot at the very base of the pectoral fin. This is absent in similar species.

Body Shape and Color

Its slender, silvery body with a slightly darker back and white belly is characteristic. The body is more elongated and less deep-bodied than many other croakers.

Mouth Position

The mouth is large and oblique, angled upwards, indicating its predatory feeding habit on small, midwater prey.

Dorsal Fins

The two distinct, deeply notched dorsal fins are also a good identifier within the Sciaenidae family.

Habitat

Water type
saltwater
Depth
Typically found in shallow coastal waters, from the surf zone to depths of about 50 meters (165 feet).
Environment
Prefers sandy or muddy bottoms, often found in bays, estuaries, and nearshore coastal areas. Forms large schools, particularly juveniles.
Geographic range
Eastern Pacific Ocean, from central California (Point Conception) south to Baja California, Mexico. Most abundant in Southern California.

Aquarium Information

  • Care level: advanced
  • Temperament: semi-aggressive
  • Diet: carnivore
  • Minimum tank size: 200 gallons
  • Temperature: 18-24°C (64-75°F)
  • pH level: 8.1-8.4
  • Hardness: 8-12 dKH
  • Compatibility: Best kept in species-specific tanks or with other large, robust, fast-moving fish that can tolerate similar water conditions and feeding habits. Not suitable for reef tanks due to predatory nature.
  • Special requirements: Requires a large tank with ample swimming space, strong filtration, and excellent water quality. They are active predators and need a diet of varied meaty foods. Can be skittish and prone to injury if startled. Not commonly kept in home aquaria due to size and specific needs.

Wild Information

  • Conservation status: least concern
  • Seasonality: Present year-round, but often more abundant in shallower waters during warmer months.
  • Market price: Low
  • Commercial importance: low
  • Taste: Mild, somewhat bland
  • Texture: Soft, flaky
  • Cooking methods: Frying, Baking, Grilling
  • Nutritional value: Good source of protein and omega-3 fatty acids, though not as rich as some other fish.

Key Facts

No Croaking Soundbehavior

Unlike many other members of the Sciaenidae family (drums and croakers), the Queenfish (Seriphus politus) is not known to produce drumming or croaking sounds using its swim bladder.

Schooling Behaviorbehavior

Queenfish are highly social and form large, dense schools, especially juveniles. These schools can be observed near the surface in coastal waters, often attracting predators.

Nocturnal Feederbehavior

While they can be active during the day, Queenfish are primarily nocturnal predators, feeding on small crustaceans and fish under the cover of darkness.

Short Lifespaninteresting

Queenfish are relatively short-lived, typically reaching a maximum age of about 3-4 years.

Safety Information

Safe
  • Safety level: safe
  • Venomous: No
  • Edibility: edible
  • Handling notes: No specific handling precautions are required beyond standard care for any fish (e.g., avoiding sharp fins). They are not venomous and do not possess dangerous spines.

Similar Species

White Croaker

Genyonemus lineatus

Lacks the prominent black spot at the base of the pectoral fin. Has a smaller, more horizontal mouth and a more rounded caudal fin. Body is generally less elongated and often has faint wavy lines on the sides.

Yellowfin Croaker

Umbrina roncador

Distinguished by its bright yellow pelvic and anal fins, and a single, thick barbel on its chin. Lacks the pectoral fin spot of the Queenfish.

Spotfin Croaker

Roncador stearnsii

Has a large, distinct black spot at the base of the soft dorsal fin rays, not on the pectoral fin. Generally a deeper-bodied fish.

Scientific Classification

Kingdom
Animalia
Phylum
Chordata
Class
Actinopterygii
Order
Perciformes
Family
Sciaenidae
Genus
Seriphus
Species
Seriphus politus

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