Lorna Morgan Dvd 2010

The Salmonidae

belong to the family Salmonidae about 70 species of 'freshwater, cold-water characteristics of the northern hemisphere. Some of these species are anadromous , which make migration from sea to fresh water in order to reproduce itself, like for example the well-known salmon, many of them after the reproductive act, now devoid of energy, and allow dying in the beds of rivers. The Salmonid fish are generally from the body rather slim, but the morphological and biological obviously vary from species to species.

Let's see the list some representative species of this family, making a brief description:

trout (Salmo trutta ) now widely used, because of man, in various parts of the globe it has many subspecies sometimes difficult to distinguish. He lives in freshwater rivers and lakes that fish being a fairly adaptable in various environments, because sometimes even penetrate into the sea. The coloring can vary greatly depending on the subspecies and the type of habitat in which they live. Predatory fish, it feeds on a variety of organisms: insects, small fish, amphibians. Presents an adipose fin located near the stalk caudal. Species much sought after by anglers, does not reach large size compared to those of other salmonids, it's usually a few feet and very rarely exceed two feet in length. It must be said that even if the size heterogeneity is due to the particular environment in which the animal lives, and then to his diet.

rainbow trout (Salmo trutta marmoratus ) considered a subspecies of trout (Salmo trutta ), the trout is a species endemic to Italy and Slovenia, where he lives in Apennine rivers that flow into the Adriatic. Morphologically and biologically similar to the size of brown trout, however, reaches far beyond, could exceed one meter in length and 20 kg. The livery is characteristic: the white sides are covered with irregular dark spots, hence the term "marble", the common name of the species. The back is dark and the belly is white.

salmon (Salmo salar ) : talking about salmon often you can refer to different species, in this case we consider that for us is the most common species, ie The Atlantic salmon (Salmo salar ). Morphology similar to that of "trout" are larger in size, attaining a maximum weight of a few tens of kilograms. Species with sexual dimorphism in the reproductive period has a livery colors more intense. Generally, it is silvery white in the ventral region and olive gray with dark spots in the dorsal region. It 'a predatory fish and has a relatively well developed muscles. They are well known in its migrations for reproductive purposes where, going cold rivers, reaches reproductive places where, after the act of fertilization, often dies. Very important for fish farming area and fly-fishing by sportsmen. Present meat is tasty and rich in valuable omega-3 that has a high commercial interest. It is sold fresh, canned or processed in various ways.

Taimen (Hucho Taimen ): While it is certainly the least known among salmonids listed above, I mention it because it is the representative of the family Salmonidae that reaches the largest ever. Also known as the Salmon Siberian Taimen the is a voracious predator that in exceptional cases exceed two meters in length and 100 kg in weight, but the average weight is 40 kilos. It has the belly is usually white, while the ventral region is olive and reddish in the region becomes more posterior body becoming an increasingly popular and turned red as we approach the tail. The adults of this species feed voracious fish (sometimes large) and also of small terrestrial animals entering unaware of its habitat. It 's a species now considered endangered and is now present mainly in Mongolia and neighboring areas such as Russia and China.

The picture above shows the comparison of the morphological differences between the sexes in Atlantic salmon (Salmo salar ), note the peculiar structure of the male jug (below). Clicking on the scientific name of each of the described fish you can see a representative image.

Measurements For Espresso

Jaws copper

copper shark (Carcharhinus brachyurus ) belongs to the family of Carcharhinus, all formidable predators, which may be more or less fast and powerful. Several species of this family are potentially dangerous to humans. Our shark is considered a large shark, as in some (rare) cases exceed 3 meters in length, are common sizes of just over 2 meters. The body has a long slender snout and ends in a little flattened ventrally back and slightly rounded at the apex. The mouth is relatively wide and has triangular teeth and finely serrated. The pectoral fins are quite developed and the caudal fin, as in most sharks, it has the upper lobe markedly longer than the lower one. The color (which gives it the common name of Italian copper shark) is mainly olive-bronze on the sides, darker on the back lightens to white belly. The English name is Copper shark is also commonly known worldwide as bronze whaler. It 's a species with wide distribution , also present in the Mediterranean . Usually frequents the waters near the coast, but can also be found in the waters offshore. L ' power is varied because it feeds on various bony fishes, small sharks, rays, cephalopods and some carcasses of cetaceans. It 's a placental viviparous species, ie there are no eggs and embryos developing derive nourishment directly from the mother's body. The number of sharks give birth to each event is an average of 15. Although it is considered dangerous and on many occasions attacked the man (maybe never with fatal outcome) is much less dangerous than the well-known species that cause a number of attacks and casualties much higher. Given the edibility of the meat is caught with nets and longlines, also is coveted by those who practice shark fishing . The biggest recorded specimen ever caught was over three meters long and weighed just over 300 kg .

I propose the following interesting and exciting part of a report of someone who, at first, this large predator fish bringing it to the bank:

Vittorio Azzano (Sharkman): Link to report

In pictures (courtesy of V. Azzano) you can enjoy this fantastic predator drawn on the bank "Skeleton coast "(Namibia) by Victor on one of his many fishing trips targeting shark in Africa.