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The Pacific porgy (Calamus brachysomus) is a species of marine ray-finned fish belonging to the family Sparidae, the seabreams and porgies. It is characterized by its deep, compressed body and a distinctive coloration that can vary with age and habitat. This species is a demersal fish, typically found over sandy or muddy bottoms, often near rocky reefs or seagrass beds. It is a commercially important species in some parts of its range and is also sought after by recreational anglers.
Physical Characteristics
- Body shape
- compressed
- Coloration
- Adults are typically silvery-gray to brownish-silver, often with iridescent reflections. They may have faint vertical bars or blotches, especially when stressed or in certain habitats. The fins are generally dusky or yellowish. Juveniles often exhibit more pronounced banding or spotting. A distinctive dark blotch may be present at the base of the pectoral fin.
- Scale type
- ctenoid
- Mouth position
- terminal
- Distinctive features
- Deep, compressed body, Steep dorsal profile of the head, Large eyes, Small, protractile mouth with strong canine-like teeth in the front and molariform teeth in the back for crushing shells, Long pectoral fins, Often a dark blotch at the base of the pectoral fin
- Dorsal fin
- Single dorsal fin with 12-13 spines and 10-12 soft rays. The spiny portion is longer than the soft-rayed portion.
- Tail fin
- Moderately forked caudal fin.
- Pectoral fin
- Long and pointed pectoral fins, often extending beyond the origin of the anal fin.
- Distinctive fins
- Anal fin with 3 spines and 9-10 soft rays. Pelvic fins are thoracic.
Identification Tips
Body Shape
Look for a very deep, compressed body, characteristic of porgies.
Head Profile
Note the steep, almost vertical profile of the head above the eyes.
Pectoral Fins
Observe the long, pointed pectoral fins that often extend past the anal fin origin.
Mouth and Teeth
Examine the small, protractile mouth with visible canine-like teeth at the front and molar-like teeth in the back, adapted for crushing prey.
Coloration
Silvery-gray body, sometimes with faint bars, and a potential dark blotch at the pectoral fin base.
Habitat
- Water type
- saltwater
- Depth
- Typically found in depths ranging from 5 to 100 meters (16 to 328 feet), though occasionally deeper.
- Environment
- Demersal, inhabiting sandy or muddy bottoms, often in association with rocky reefs, seagrass beds, or shell hash. They prefer areas with some structure for shelter and foraging.
- Geographic range
- Eastern Pacific Ocean, from Southern California, USA, south along the Baja California Peninsula, throughout the Gulf of California, and south to Peru, including offshore islands like the Revillagigedo Islands.
Aquarium Information
- Care level: advanced
- Temperament: semi-aggressive
- Diet: carnivore
- Minimum tank size: 200 gallons
- Temperature: 72-78°F (22-26°C)
- pH level: 8.1-8.4
- Hardness: 8-12 dKH
- Compatibility: Can be kept with other large, robust fish. May be aggressive towards smaller or more docile tank mates. Not reef safe as it will consume invertebrates.
- Special requirements: Requires a large tank with plenty of swimming space and a sand bed for foraging. Good filtration is essential due to its carnivorous diet. May be sensitive to poor water quality.
Wild Information
- Conservation status: least concern
- Seasonality: Spawning typically occurs during warmer months, with peak availability for fishing varying by region.
- Market price: Varies by region and season, generally moderate to high.
- Commercial importance: medium
- Taste: Mild, flaky white flesh with a delicate flavor.
- Texture: Firm and moist.
- Cooking methods: Baking, Grilling, Frying, Steaming
- Nutritional value: Good source of lean protein, omega-3 fatty acids, and essential vitamins and minerals.
Key Facts
Shell Crusherbehavior
The Pacific porgy possesses strong molariform teeth in the back of its mouth, perfectly adapted for crushing the shells of its invertebrate prey.
Protogynous Hermaphroditeinteresting
Like many sparids, Calamus brachysomus is a protogynous hermaphrodite, meaning individuals typically mature as females and later transition to males.
Habitat Generalistbehavior
While preferring sandy or muddy bottoms, Pacific porgies are often found near various structures like reefs and seagrass, demonstrating adaptability in their habitat choices.
Safety Information
Safe- Safety level: safe
- Venomous: No
- Edibility: edible
- Handling notes: No specific handling precautions beyond standard fish handling. Spines on the dorsal and anal fins can be sharp, so care should be taken to avoid punctures. Not known to be venomous.
Similar Species
Sheepshead Porgy
Calamus penna
Calamus penna typically has a more elongated body, a less steep head profile, and generally lacks the prominent dark pectoral fin blotch seen in C. brachysomus. Its geographic range is primarily the Western Atlantic.
Sargo
Anisotremus davidsonii
Sargo (a grunt, not a porgy) has a similar body shape but possesses distinct vertical black bars on its body and a different mouth structure. It also has a more pronounced notch in its dorsal fin.
Ocean Whitefish
Caulolatilus princeps
Ocean whitefish (a tilefish) has a more elongated body, a different fin structure (especially the dorsal fin), and a distinct coloration with iridescent blue and yellow markings, lacking the deep body and head profile of the Pacific porgy.
Scientific Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Actinopterygii
- Order
- Spariformes
- Family
- Sparidae
- Genus
- Calamus
- Species
- brachysomus
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