Name:
Spotted Seatrout
Alias:
Scientific:
Cynoscion Nebulosus
| Cynoscion nebulosus | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Perciformes |
| Family: | Sciaenidae |
| Genus: | Cynoscion |
| Species: | C. nebulosus |
| Binomial name | |
| Cynoscion nebulosus (Cuvier in Cuvier and Valenciennes, 1830) |
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The spotted seatrout also known as speckled trout or spotted weakfish (Cynoscion nebulosus) is a common estuarine fish found in the southern United States along coasts of Gulf of Mexico and South Atlantic Ocean. While most of these fish are caught on shallow, grassy flats, spotted seatrout reside in virtually any inshore waters, from the surf of outside islands to far up coastal rivers, where they often come for shelter during cold weather. Contrary to its name, the spotted seatrout is not a member of the trout family (Salmonidae), but of the drum family (Sciaenidae). It is popular for commercial and especially recreational fishing in coastal waters of the southeastern United States. Adults reach 19-25 inches in length and 1-4 pounds in weight. ==Distribution== Spotted seatrout live in the top of the water column and are most numerous along the coasts of the south eastern states like Texas, Louisiana, Alabama, Mississippi, Georgia, and Florida. They are also common along the coasts of North and South Carolina and Virginia. Estuarine coasts are prime settlement areas. They are uncommonly seen north of Delaware Bay and along the coast of Cape Cod, Massachusetts.
This fish is often found in shallow tidal creeks near flooded salt marshes, where it feeds mainly on shrimp and small fish. Spotted seatrout are also known to congregate heavily over oyster reefs.
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Spotted seatrout is the common name endorsed by the American Fisheries Society. However, this fish has many other common names, including speckled trout, speck, speckles, spec, truite gris (Louisiana French), trucha de mar (Mexican Spanish), spotted weakfish, spotted seateague, southern seateague, salmon, salmon trout, simon trout, winter trout, seatrout, and black trout. Particularly large ones are nicknamed Gator trout.[1]
The spotted seatrout has prominent canine teeth. Like other fish of the family Sciaenidae, the spotted seatrout has an elongated soft dorsal fin that has no scales; it is separated form the spinous dorsal fin by a deep notch. It usually has two anal spines and the lateral line extends to the tip of the caudal fin. The back has distinct spots scattered on it, including on the dorsal and caudal fins. Unlike some other members of the family Sciaenidae, the spotted seatrout does not have any chin barbels. In stained water, this fish's background may take on a golden hue. Its shape and coloration is reminiscent of a brown trout. This fish is closely related to the weakfish, Cynoscion regalis.
The average size of spotted seatrout is 0.5-1.0 kg (1-2 lb), but in most areas fish up to 2.5 kg (5 lb) are fairly common. 3.5-4.5 kg (8-10 lb) fish are rare. The world record is 7.9 kg (17 lb 7 oz).
Small trout eat large amounts of shrimp and other crustaceans. As trout become larger, their diet shifts toward fish, the larger, the better. Studies in Texas and Mississippi show that really big trout strongly prefer to feed on mullet; a large trout will find the largest mullet it can handle and try to swallow it. Often the mullet is half or two-thirds as large as the trout.[2]
Like all members of the drum family, mature males make a "drumming" sound to attract females during the spawning season. Spotted seatrout have a long spawning season from spring through summer.
Larval seatrout reach 5-7 mm in length about two weeks after hatching, and 170-200 mm within about seven months. It takes between one and two years for seatrout to reach 300 mm (about 12 inches) and between two and three years for seatrout to reach 400 mm in length (about 16 inches).The maximum age of spotted seatrout that have been caught is estimated to be 12 years old, though that is rare, and the oldest fish caught on a regular basis are closer to 4 or 5 years old.[3]
By the end of the first year, spotted seatrout are about 250 mm long and about half of them are mature enough to reproduce. [4][5] They reproduce in shallow, grassy areas of estuaries.
As spotted seatrout grow longer, they increase in weight. The relationship between weight and length is not linear. The relationship between total length (in millimeters) and weight (in grams) can be expressed by an equation of the form:
Invariably, b is close to 3.0 for all species, and c is a constant that varies among species.[7] The coefficient c and the exponent b are found by fitting an equation of this form to measured weight-length data. For some fish, including spotted seatrout, there are some variations in the weight-length relationships with the seasons and/or with whether the fish is male or female.[8] Jenkins[9] reported slightly different relationships for male and female spotted seatrout, and for fall and spring:
Fall/male: W = 0.00000534L3.093
Spring/male: W = 0.000011535L2.989
Fall/female: W = 0.000006252L3.066
Spring/female: W = 0.000007834L3.035
Only the relationship for male spotted seatrout in the spring appears noticeably different from the others on a graph.
While spotted seatrout are caught by both commercial and recreational fishermen, recreational fishing represents the vast majority of the catch. Almost all spotted seatrout are caught with hook and line, as many places have banned fishing for them with gillnets. The most common bait is shrimp, especially live shrimp, and larger trout prefer small bait fish such as menhaden. One catching technique is at dark to throw out a glow stick into the water and cast around it as these fish are attracted to light (see Fishing light attractor).
According to the NOAA, spotted seatrout are in the top ten species for recreational fishing in the United States.[10] From 1993 – 2003, recreational fishermen in Louisiana harvested more than 6 million spotted seatrout each year.[11] Along the coasts of North Carolina and Virginia, more than half a million speckled trout were caught by recreational fishermen each year between 2005 and 2008.[12] Nevertheless, because they reproduce so well, spotted seatrout is listed as a “best choice” for sustainable seafood in Louisiana and Florida by the Monterey Bay Aquarium's Seafood Watch.
Weakfish are so named because their mouth is very fragile compared to other gamefish. Many Weakfish are lost by gamefisherman when the fisherman strikes too hard or tries to horse the fish in. The Weakfish's mouth is easily torn. A light strike and a constant strain in more effective. Fishing is most intense in sheltered inside waters. More big trout are caught in spring because they move into shallow beach and bay habitats at that time for their first spawn of the season. The rest of the summer and early fall, the larger trout tend to stay in cooler Gulf waters and only periodically enter beach and bay habitats for subsequent spawns. Many of the large fish winter offshore, with a few wintering in the interior marshes, where they are very sluggish.
The management of the species is limited to size and possession limits, but programs have been initiated to gather more information on their overall health and abundance.[13]
