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Discover everything to fish in Llanymawddwy

Find the best moment to go fishing in Llanymawddwy, the most caught species, the techniques used, go fish with anglers nearby, find a fishing charter or guide, save your spots and discover new ones.

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N°1 | The River Lamprey

The River Lamprey belongs to the Petromyzontidae family. It measures 18 to 50 cm (average 25 to 35 cm) and weighs 30 to 150 g (average 50 to 70 g). Females are larger than males. The maximum age of the river lamprey is estimated at 10 years. Reproduction takes place between January and May. The number of eggs varies between 4,000 and 40,000. It is caught from January to May. A vertebrate with a cartilaginous skeleton and no jaws, the river lamprey has an anguilliform body, without scales and covered with toxic mucus. Its back is bluish to brownish green. Its sides are greyish, tanned, without mottling. The belly is white. The eyes are very well developed but remain primitive. A single nostril is located between the two eyes. In adults, the circular mouth in the lower position is a suction cup adapted to suction. The buccal disc and tongue are covered with only a few horny denticles, but most of them are strong and acute. On each side of the head, this species has seven pairs of circular gill holes (spiracules). The river lamprey has three fins: one caudal and two dorsal. The two dorsal fins are separated by a small interval, the second being triangular in shape, longer and higher than the first. The larvae are light-colored and its mouth is horseshoe-shaped. His eyes remain hidden under the skin. So it’s blind.

Fishing period : January to May

Minimum size : 20 cm

Difficulty :

N°2 | The Vendace fish

The vendace fish belongs to the Salmonidae family. Its average size is 45 cm and its weight is 1 kg. The oldest specimens observed were 10 years old. It breeds from October to December. The female lays 30,000 eggs per kg of weight. It is fished from March to December. The vendace is a small, slender and streamlined fish that is very easy to confuse with a bleak, a small lavaret whitefish or a peled whitefish. Unlike the bleak, the vendace is a member of the Salmonidae family, which is why it has a fat fin. It differs from the lavaret and peled whitefish by its much longer lower jaw. In the lavaret whitefish, the upper jaw is longer and in the peled whitefish the jaws are of the same length. It is silvery on the sides, with a white belly and a brown-green, grey-blue or blue-green back.

Fishing period : from March to December

Minimum size : 30 cm

Difficulty :

N°3 | The Spined Loach

The Spined loach belongs to the Cobitidae family. The Spined Loach has a size of 6 to 12 cm. it can live up to 10 years. The breeding period runs from April to July. The female can lay up to 1500 eggs. It can be fished all year round. Its elongated, ribbon-shaped body is covered with very small scales. Variable in color, light brown to dark brown, its flanks are marked with dark spots aligned longitudinally (the points in the lower row are larger). His belly is very clear and almost white. The head is narrow. The inferior mouth (in the ventral position) is surrounded by six small barbells (4 on the upper jaw and 2 at the corner of the lips). Under each eye, there is a small moving spine that is very inconspicuous (it can be detected mainly by touch). The caudal fin has a black spot growing at its birth and is then marked with four lines of dark dots. The pectoral fins are long. If you have good eyes, you can tell the male from the female by the longer and thicker pectoral fins.

Fishing period : All year

Minimum size : 8 cm

Difficulty :

N°4 | The Rainbow trout

The Rainbow trout belongs to the Salmonidae family. On average, it measures 35 to 70 cm and weighs 500 g to 6 kg. In this species, a maximum lifespan of 11 years has been observed. Rainbow trout reproduce naturally from late March to early July. Fertility is about 2000 eggs per kg. Depending on the region, it is fished from March to September. Rainbow trout have a streamlined, laterally compressed and slender body. It has a small head and a slightly split mouth. Its body is arched at the level of the dorsal fin. It should also be noted that there is an adipose fin common to all Salmonids. Its scales are small and thin. Generally, the entire body is punctuated by small black spots, many on the back and sides, as well as on the dorsal and caudal fins. The back is olive green and the sides are silvery. The color of the belly varies from white to yellowish. Nevertheless, the general coloring of the body varies greatly depending on the age, habitat and physiological stage of the fish. The particularity of rainbow trout lies in the presence, all along the body, of an iridescent longitudinal band, predominantly pink. During the breeding season, the female is generally rounder because of the ovarian volume, while the males appear to be more elongated. They become darker and their colors more vivid.

Fishing period : march to September

Minimum size : 20 cm

Difficulty :

N°5 | The Three Spined Stickleback

The three spined stickleback belongs to the Gasterosteidae family. The usual size of the three-spined stickleback is 4 to 5 cm for females, with males being a little smaller, about 3 to 4 cm. The life span of the three-spined stickleback varies from 3 to 5 years in natural environments and up to 8 years in captivity. Spawning season extends from March to June. Fertility is 200 to 400 eggs. It is fished from June to March. The three-spined stickleback is a tiny fish with a tapered, laterally compressed body. Its head is quite small, with fairly large eyes, and ends in a narrow mouth that is slightly oriented forward and upwards. The caudal peduncle of the three-spined stickleback is very narrow with a slightly indented caudal fin. The long dorsal fin is set far back, plumbing the anal fin. The dorsal fin of the three-spined stickleback is preceded by three spines, two long and one short, placed on the back of the fish. A curved spine also precedes the implantation of the anal fin. The pelvic fins are replaced by two thorns. The color of this fish is greenish brown for the back, with metallic reflections, silvery for the sides and whitish for the belly. Along the lateral line of the three-spined stickleback, there are no scales but bone plates called "badges", a kind of natural shielding that accompanies the thorny defenses of this fish.

Fishing period : June to March

Minimum size : no restriction

Difficulty :

N°6 | The Common Carp

The Common Carp belongs to the Cyprinidae family. Its average size is 40 to 60 cm (up to 1 meter for some specimens) with an average weight of 6 to 8 kilos (up to 37 kilos for some specimens). It can live up to 20 years in the wild. Common carp breed from spring to summer. The female lays 250,000 eggs per kg of weight. Carp can be fished all year round in the 2nd category rivers! It is a massive fish, green in color (except the koi). Its head is conical, its mouth is protractile, it has no teeth but has 2 pairs of barbels. Its growth is fast; it exceeds one kilo in 3 years. The fins are strong and grey, except for the pelvic and anal fins, which are slightly orange.

Fishing period : All year

Minimum size : 40 cm

Difficulty :

N°7 | The Eel fish

The Eel fish belongs to the Anguillidae family. The eel can measure up to 1.50 m in length for 4 kg, but the average size is between 40 and 60 cm. They can live up to 50 years old. They reproduce in March. They can be fished from April to September. The eel is a species of snake fish, hence its Latin name "anguis" which means snake. Its anterior part is circular while the caudal section is flattened. Its body is covered with smooth skin and enriched with mucus. The scales only appear late. The eyes of an eel are round. It has a terminal mouth with a prominent jaw. Without pelvic fins, the eel has only small pectoral fins and long dorsal, anal and caudal fins. These meet at the level of the tail.

Fishing period : April to September

Minimum size : 50 cm

Difficulty :

N°8 | The Lesser Spotted Dogfish

The Lesser Spotted Dogfish belongs to the Scyliorhinidae. It has a height of about 80 cm in length and a maximum weight of 5 kg. It can live up to 8 years. It breeds from November to July. The female lays about a hundred eggs. It is fished in winter. The lesser spotted dogfish is a small spotted shark with a rounded snout. The spots are small, numerous, brown to blackish-brown on a light beige to red background, the belly remains light. Five gill slits are located just behind the black and oval eyes. As with all species of the Scyliorhinidae family, the first dorsal fin D1 is located behind the pelvic fins; the second dorsal fin D2 is located just behind the anal fin. The distance between the 2 dorsal fins D1 and D2 is greater than the length of the base of the anal fin. The nasal valves are contiguous.

Fishing period : in Winter

Minimum size : No restriction

Difficulty :

N°9 | The Ide fish

The Ide fish belongs to the Cyprinidae family. Its size is generally between 30 and 50 cm but this fish can reach a maximum length of 80 cm for a weight of 5 kg and an age of nearly 20 years. Spawning takes place from March to April. Females lay between 60,000 and 160,000 eggs. The fishery is open from June to March. The body is long and laterally compressed with a terminal mouth pointing upwards. The head is strong with a small mouth, obtuse snout and yellow eyes. The back is rounded. The anal fin has a concave rear edge. The back and upper part of the head are greyish-green to brown; the yellowish-brown flanks have silvery or golden reflections; the belly is whitish. The fins are dark except for the pelvic, ventral and anal fins which are frankly red. In older and larger specimens, the body color may turn yellow/bronze.

Fishing period : June to March

Minimum size : 25 cm

Difficulty :

N°10 | Brown Trout

The Brown Trout belongs to the Salmonidae family. According to the location, the adult size varies from 25 cm to 80 cm for 300 to 800 g. It lives for 3 to 6 years. The spawning period starts in October and end in January. The female can lay up to 4000 eggs. The fishing period is open from the second Saturday of March until the third Sunday of September. This fish is not hard to catch but the fishing needs complex skills. Depending on its environment, the brown trout have a very variable color, but the brown trout, as its name shows, is rather brown with scattered black and red spots, depending on the spawners. It has a certain mimicry according to the bottom of its living spaces since the dominant brown will become a green dress if it lives close to the banks where yellow and even sometimes silvery white will mix. It has a "useless" adipose fin between the dorsal fin and the caudal fin. The head is tapered, strong and has a powerful jaw. Its back is a pretty black or night blue.

Fishing period : March to September

Minimum size : no restriction

Difficulty :

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How it works

This is a score of 1 to 10 calculated city by city according to some forty criteria affecting fishing: moon, weather conditions, atmospheric pressure, sunrise / sunset. sun, tides, swell etc .