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Common barbel

Common barbel

The common barbel, Barbus barbus, is a species of freshwater fish belonging to the family Cyprinidae. It shares the common name 'barbel' with its many relatives in the genus Barbus, of which it is the type species. In Great Britain it is usually referred to simply as the barbel; similar names are used elsewhere in Europe, such as barbeau in France. The name derives from the four whiskerlike structures located at the corners of the fish's mouth, which it uses to locate food.

Distribution and habitat

B. barbus is native throughout northern and eastern Europe, ranging north and east from the Pyrénées and Alps to LithuaniaRussia and the northern Black Sea basin. It is an adaptable fish which transplants well between waterways, and has become established as an introduced species in several countries including Morocco and Italy. Its favoured habitats are the so-called barbel zones in fast-flowing rivers with gravel or stone bottoms, although it regularly occurs in slower rivers and has been successfully stocked in stillwaters.

Barbel are very abundant in some rivers, often seen in large shoals on rivers such as the WyeIzaak Walton reported that there were once so many barbel in the Danube that they could be caught by hand, 'eight or ten load at a time' .

Ecology

 
Juvenile barbel

Adult B. barbus specimens can reach 1.2 m (4 ft) in length and 12 kg (26 lb) in weight, although it is typically found at smaller sizes (50–100 cm length, weight 1–3 kg).[7]Their sloping foreheads, flattened undersides, slender bodies and horizontally oriented pectoral fins are all adaptations for their life in swift, deep rivers, helping to keep them close to the riverbed in very strong flows. Juvenile fish are usually grey and mottled in appearance; adults are typically dark brown, bronze or grey in colour with a pale underside, with distinctively reddish or orange-tinged fins. The lobes of the tail are asymmetrical, the lower lobe being rounded and slightly shorter than the pointed upper lobe.

Barbel commonly feed at night, although they may feed during the daytime in the safety of deeper water or near underwater obstructions.Their underslung mouths make them especially well adapted for feeding on benthic organisms, including crustaceansinsect larvae and mollusks, which they root out from the gravel and stones of the riverbed.

Males become mature after three to four years, females after five to eight years. Spawning occurs between May and late June on most rivers, when groups of males assemble in shallow water in pursuit of mates. Like many fish species, male barbel develop distinctive tubercles on their heads prior to spawning.Females produce between 8,000 and 12,000 eggs per kilogram of bodyweight, which are fertilised by males as they are released and deposited in shallow excavations in the gravel of the riverbed.

Parasites of Barbus barbus include Aspidogaster limacoides, a trematode flatworm;and Pomphorhynchus laevis, an acanthocephalan worm.

As food

Many authors have noted the highly toxic nature of barbel roe when eaten by humans, including Dame Juliana Berners and Charles David Badham. Badham relates the experience of Italian physician Antonio Gazius, who, he says, "took two boluses, and thus describes his sensations: 'At first I felt no inconvenience, but some hours having elapsed, I began to be disagreeably affected, and as my stomach swelled, and could not be brought down again by anise or carminatives, I was soon in a state of great depression and distress.' His countenance was pallid, like a man in a swoon, deadly coldness ensued, violent cholera and vomiting came after until the roe was passed, and then he became all right."

Despite the risks associated with eating barbel and its roe during the spawning season, several notable cookery authors have included recipes for barbel in their books. Mrs Beeton, for example, writes that they are in season in the winter months, and suggests simmering them with port and herbs.

Recreational importance

 
A specimen barbel from the River Wye, England.

The common barbel is a popular sport fish throughout its range, long prized by anglers for its power and stamina. Walton noted that "he will often break both rod and line if he proves to be a big one... the Barbel affords an angler choice sport, being a lusty and a cunning fish; so lusty and cunning as to endanger the breaking of the angler's line, by running his head forcibly towards any covert, or hole, or bank, and then striking at the line, to break it off, with his tail".

Barbel fishing is especially popular in the UK, where it reaches a weight of over 9 kg (20 lb) A fish of more than 4.5 kg (10 lb) is considered to be of specimen size. Famous UK barbel rivers include the Hampshire AvonDorset StourTrentKennetWyeSevern, and Great Ouse. Several angling societies exist in the UK which specifically promote the pursuit and conservation of the species, including the Barbel Society and the Barbel Catchers Club.

Baits for catching barbel vary widely according to local practices and conditions. In the UK, popular baits include tinned luncheon meatfishmeal-based pellets, hemp seed, maggots and boilies. In France, many anglers still use natural baits, especially caddis larvae, which they collect from the stones and gravel near the fish's feeding areas.

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