Content Overview of Centropomus undecimalis
- Distribution and habitat
- Basic characteristics
- Temperament / Behavior
- Fish for sale
- Fish photo
History of Centropomus undecimalis
The common snook (Centropomus undecimalis) is a species of marine fish in the family centropomidae of the order perciformes. The common snook is also known as the sergeant fish or robalo. it was originally assigned to the sciaenid genus sciaena; Sciaena undecimradiatus and centropomus undecimradiatus are obsolete synonyms for the species.
The common snook, centropomus undecimalis, is distributed in tropical and subtropical areas of the west coast of the atlantic ocean, from cape canaveral, Florida, USA, to southern Brazil. The common snook is considered to be the largest and also the fastest growing snook of all the species of the genus centropomus in the Americas, and is a sporting fish of high market value. The species has received high priority with regard to conservation and aquaculture issues, due to its ecological and economic characteristics.
This widely distributed species has a centre of abundance around florida in U.S. waters, with populations expanding northward in the Gulf of mexico. It prefers mangrove-fringed estuarine habitats. it is highly valued in recreational and commercial fisheries. fishery statistics are inconsistently collected and generally mixed with other centropomus species.
They are a very popular game fish that prefer near-shore vegetative habitats like river mouths and salt marshes, growing to over 40 inches long at times.
Distribution and habitat
Western Atlantic: southern florida (USA), southeastern coast of the Gulf of mexico, most of the antilles and Caribbean coast of Central and South America extending southward to rio de Janeiro, Brazil; also North carolina and texas, USA
This euryhaline species occurs in coastal waters with a preference for mangrove-fringed estuarine habitats. Its wide salinity tolerance allows it to occupy a variety of habitats from freshwater to marine. it is most commonly found in waters of temperatures between 25 to 31 degrees; the lower lethal limit of water temperature for juveniles is 9-14 degrees Celsius and 6-12 degrees Celsius for adults.
Centropomus undecimalis is widespread throughout the tropical waters of the western atlantic ocean from the coast of the North carolina to Brazil including the Gulf of mexico and the caribbean sea. Occurring in shallow coastal waters (up to 20 metres (66 ft) depth), estuaries, and lagoons, the fish often enters fresh water. it is carnivorous, with a diet dominated by smaller fishes, and crustaceans such as shrimp, and occasionally crabs.
Centropomus undecimalis characteristics
Scientific Name: Centropomus undecimalis
Lifespan: 18 – 20 years
Origin: Lake Arenal
Common Names: Common Snook, linesiders, pike, sargeant fish, snook and thin snook
Size: 19 inches (50 cm)
PH: 4 – 10
Temperature: 57.6 °F – 54.9 °F (14.2 °C – 12.7 °C)
Water Hardness: 10° to 20° DH,
Lifecycle of Centropomus undecimalis
Common snook have a slender body and a distinct lateral line. The dorsal fins are high and divided and the anal spines are relatively short. Its maximum size is 140 cm fl and weight to 22 kg. Females are generally larger than males of the same age. it is a protandric hermaphrodite. The common snook has a sloping forehead with a large mouth and a protruding lower jaw. Adult common snook can grow to over 47.24 inches (120 cm) in total length , which is larger than any other species in this family.
It is a broadcast spawner, that reproduces twice per year, often peaking during times of increased rainfall. it has been observed to congregate for spawning at the mouths of rivers, inlets and canals. Spawning occurs in the evening over the course of several days. Its main spawning season occurs between may to August where it spawns only in saline waters.
Centropomus undecimalis Temperament / Behavior
Common snook, as amphidromous fish, often move between fresh and salt water throughout their life. Common snook, like several species of fish, are terribly in tune with their surroundings, which means that even a small amendment in their surroundings will have a big impact on their behavior. robolo are terribly vulnerable to cold temperatures, with the consequences starting from the entire halt of all feeding at a water temperature of 14.2 °C (57.6 °F), to the loss of equilibrium at 12.7 °C (54.9 °F), to death at a temperature of 12.5 °C (54.5 °F).
Centropomus undecimalis are found to sometimes interact in savage activities, although this behavior is rare. Common snook congregate seasonally in seawater close to the mouths of rivers, inlets, and canals so as to spawn. Common snook are considered social in this they’re often found in groups, especially during times of spawning.
How to take care?
Feeding for Centropomus undecimalis
Adults are sensitive to cold stun events. it is an opportunistic carnivore that feeds primarily on other pelagic fishes. it is a pelagic feeder with two feeding peaks per day. the primary peak happens approximately two hours before sunrise, followed by a peak approximately two to a few hours following sunset. increases in feeding activity are documented with an increase in water flow following standing flood or ebb tides.
Common snook are opportunistic predators whose feeding habits indicate that there’s a positive relationship between their size and therefore the size of their prey, which means that because the snook grows it feeds on larger and bigger prey.
Health and Diseases:
Best food for Centropomus undecimalis fish:
Occurring in shallow coastal waters (up to 20 metres depth), estuaries, and lagoons, the fish often enters fresh water. it is carnivorous, with a diet dominated by smaller fishes, and crustaceans such as shrimp, and occasionally crabs.
Larval and small common snook eat mainly copepods and microcrustaceans. As common snook grow larger they eat fish, shrimp, crabs and zooplankton. Their feeding behavior is affected by the tidal cycle, and feeding activity noticeably increases with an increase in water flow following a period of standing flood or ebb tides
In saltwater environments, common snook have a similiar diet, but they may also prey upon other species of fish such as sheepshead minnows, bay anchovies, and pinfish. In saltwater environments, common snook also consume zooplankton and larger crustaceans.
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Photo of Centropomus undecimalis fish
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Read Also : Atlantic Mackerel Fish
Reference : Wikipedia