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Little information is available regarding communication and perception of longnose shiners. Like all fish, they have a lateral line that runs along middle of their body, from the opercle to the beginning of their caudal fin. Its functions include water current sensation and vibration detection.
Perception Channels: tactile ; chemical
Populations of longnose shiners are considered to be ecologically stable.
US Federal List: no special status
CITES: no special status
In longnose shiners, the size of a mature ovum is strongly correlated with the size of the female, which is also correlated with the amount of surface runoff in the area. Mature ova average between 0.84 and 0.95 mm in diameter. The sex ratio of longnose shiners is typically 1:1.
There are no known adverse effects of longnose shiners on humans.
Shiners are often used as bait by anglers.
Longnose shiners consume a variety of insects and plant material and serve as prey to larger fish.
Longnose shiners generally feed during the day. They primarily feed on dipteran larvae and other aquatic insects. The only terrestrial insect they eat are ants. They also consume copepods, cladocerans (small crustaceans called water fleas), seeds of various sedges (Cyperaceae), and occasionally ostracods, as well as microscopic plants such as diatoms (Bacillariophyceae), desmids (Desmidiales), filamentous algae, and aquatic fungi.
Animal Foods: insects; aquatic crustaceans; other marine invertebrates
Plant Foods: seeds, grains, and nuts; algae
Other Foods: fungus
Primary Diet: carnivore (Insectivore )
Longnose shiners are widely distributed throughout the southeastern coastal states of the United States. Their range extends from just west of the Mississippi River in Louisiana to Florida. More specifically, they are found throughout Louisiana's Florida parishes in the west, northward into the lower Ouachita River drainige system in Catahoula Parish in Louisiana and the lower part of the Yazoo River drainage system in Mississippi, to the upper Altamaha River drainage system in Georgia in the northeast. They are also found in the Ocmulgee River system in Georgia and in isolated populations in the upper Coosa River system and several smaller tributaries in the Alabama River drainage system.
Biogeographic Regions: nearctic (Native )
Longnose shiners are a riverine-dependent and require a free-flowing body of water with sandy substrate. Over time, they have adapted systems with currents as well. Typical habitat includes rivers with white, sandy stream bottoms with low to moderate water flow. They are often found along open sandbars and shoals. They are also commonly found in areas where stream banks are covered with woody or brushy vegetation.
Habitat Regions: temperate ; freshwater
Aquatic Biomes: rivers and streams
Longnose shiners are expected to live between 1 and 2.5 years in the wild. Most do not survive until their third winter.
Typical lifespan
Status: wild: 3 (high) years.
Average lifespan
Status: wild: 1 to 2.5 years.
Longnose shiners are small elongate fish that are usually no more than 58 to 65 mm in length. Mature males average 34.9 mm in length while females average 33.8 mm. They have a rounded head with a long blunt snout and a subterminal mouth. They have small eyes, which are located high on their head. Their dorsal and anal fins are equally elevated on the fish. Their dorsal fin has 8 rays and begins anterior to the pelvic fin. The , pectoral, and pelvic fins have 7, 14 to 15, and 8 rays, respectively. The lateral line is complete and slightly decurved. This species has 34 to 37 lateral line scales. Longnose shiners are a sandy to straw color, and are typically pale yellow above the lateral line. They also have a thin mid-dorsal stripe. The ventral side is typically white or silvery in color. Fins of breeding individuals, particularly males, are bright yellow.
Average length: male 34.9 mm; female 33.8 mm.
Other Physical Features: ectothermic ; bilateral symmetry
Longnose shiners are preyed upon by larger piscivorous fish.
Little information is available regarding the mating systems of longnose shiners.
The breeding season of longnose shiners lasts from March until October, and they generally produce multiple clutches during a breeding season. Breeding peaks at the beginning of the season and again in the middle of the season around July. Females average 62 to 121 mature ova per clutch, although they can produce anywhere from 15 to 129 eggs. Some longnose shiners reach sexual maturity during their first year, and thus some individuals may reproduce during their first year. Longnose shiners do not prepare the substrate for a spawning event. They practice broadcast spawning, which refers to the scattering of eggs and sperm. This type of reproduction lends itself to a lack of parental care to both egg and larvae.
Breeding interval: Longnose shiners generally produce multiple clutches during the breeding season.
Breeding season: Longnose shiners breed between March and October.
Range number of offspring: 15 to 129.
Average number of offspring: 62 to 121.
Key Reproductive Features: seasonal breeding ; sexual ; fertilization (External ); broadcast (group) spawning; oviparous
Longnose shiners do not prepare the substrate for a spawning event. There is no parental care of eggs or larvae in this species.
Parental Investment: no parental involvement
The longnose shiner (Notropis longirostris) is a species of ray-finned fish in the genus Notropis.
Longnose shiners are elongate, straw-colored shiners with a long, bunt snout, broadly rounded head, and a large subterminal, nearly horizontal mouth. The predorsal profile is moderately arched relative to the flatter, ventral profile. Both dorsal and ventral aspects taper abruptly from the level of the dorsal origin, posteriorly. They have small eyes situated high on the head, giving the impression of an upward-looking fish when viewed from above. Their teeth are usually 1,4-4,1 and are hooked and have prominent grinding surfaces. The tooth in the anterior row, when present, is often weak and easily broken.[2] The dorsal and anal fins are moderately high, about equally elevated, and slightly rounded at the tips. The margin of the dorsal fin is mostly straight, and the anal fin in emarginate. In both fins, the anterior rays are somewhat longer than the posterior rays when depressed. The dorsal fin has 8 (7-8) rays and its origin is slightly anterior to the pelvic fin, which has 8 (7-8) rays. The pectoral fins have 14-15 (13-17) rays and the anal fins have 7 (6-8) rays. The breast is unscaled and the belly is scaled to partially scaled. The lateral line is complete and mostly straight, with a slight decurve. They are usually no more than 58 mm in length. Mature males average 34.9 mm in length while females average 33.8 mm.
The back and sides above the lateral line are pale yellow, with a dusky cross-hatched pattern and a thin, but noticeable, middorsal stripe. The lower sides and ventral side is typically silvery or silvery white. Though usually obscure or absent, some fish may have a faint lateral stripe, especially on the caudal peduncle; pigment of the lateral stipe is confined to the areas above the lateral-line. There is no concentration of melanophores at the base of the caudal fin and all fins lack dark pigment. The fins of breeding individuals, particularly males, have a bright lemon yellow pigment. Males may also have yellow snouts.[3]
Longnose shiners generally feed during the day, with peak activity in the morning. They primarily feed of dipteran larvae and other aquatic insects. Small crustaceans, such as copepods, clasocerans, and ostracods are also a part of their diet. The only terrestrial insect they eat are ants. Longnose shiners also eat various plant materials, such as seeds of various sedges, diatoms, desmids, filamentous algae, and aquatic fungi. With increasing size, longnose shiners can have a more diverse diet, and have been found include mayfly larvae in their diets.[4][5]
The longnose shiner is a benthic, schooling species found most often in moderate current over clean sand or small gravel substrata in medium to large streams. Their habitats are often described as shallow (depths to ca. 60 cm), clean, white, open, sand areas along the edges of sand bars in low to moderate flow.[4] Though they are most abundant near the lower end of sand bars and shoal, where there is a reduced current flow, they are also commonly found in areas where stream banks are covered with woody or brushy vegetation. Longnose shiners have also been found to colonize disturbed areas around bridge repair sites where the operation of heavy machinery has created a shallow, sand-bottom stream channel.[3][2]
The sex ratio of longnose shiners is about 1:1, and both sexes mature at about the same size (30 mm) The average size of males are about 34.9 millimetres (1.37 in) long and females are about 33.8 millimetres (1.33 in) long. The average size of females tends to vary in different drainage systems. Larger females usually produce larger ova, with mature ova diameters averaging from 0.84 to 0.95 mm. Variances in female size and average diameters of mature ova seem to be strongly correlated with the amount of surface runoff in the area.[6][7]
The breading season of longnose shiners typically lasts from March until October, in waters of about 17–29 °C (63–84 °F). Longnose shiners generally produce multiple clutches during a breeding season. There may be two breeding peaks, one at the very beginning of the season and then another in the middle of the season, around July.[7] Females average from 62 to 121 mature ova per clutch and usually produce anywhere from 15 to 129 eggs. Longnose shiners do not prepare the substrate for a spawning event, and instead practice broadcast spawning, in which they scatter the eggs and sperm. This type of reproduction results in a lack of parental care to both egg and larvae.[3]
In the wild, longnose shiners are expected to live between 1 and 2.5 years in the wild. While some fish can survive up to their third summer, most do not survive to their third winter.[3]
Longnose shiners are widely distributed throughout the southeastern coastal states of the United States. Their range extends from just west of the Mississippi River in Louisiana to Florida. In Louisiana, they are common and widespread throughout the Florida parishes and northward into the lower Ouachita River drainage system in Catahoula Parish.[2] In Mississippi, they are found in the lower part of the Yazoo River drainage system.[3] They are also found to the upper Altamaha River drainage system and the Ocmulgee River system in Georgia. Isolated populations can also be found in the upper Coosa River system and several smaller tributaries in the Alabama River drainage system.[8]
Longnose shiners are too small to be a game fish or to be used as food, but they are often used as bait by anglers who make use of their silver shiny color to attract bigger fish.
The genus name, Notropis, is misnomer given by Rafinesque to shriveled specimens, with the meaning of "back keel"; from the Greek word, noton, meaning back. The species name, longirostris, comes from the Latin word longus, meaning long, and the Latin word rostrum, meaning snout, referring to the long snout on this species.[9]
The longnose shiner (Notropis longirostris) is a species of ray-finned fish in the genus Notropis.
Notropis longirostris es una especie de peces de la familia de los Cyprinidae en el orden de los Cypriniformes.
Los machos pueden llegar alcanzar los 6,5 cm de longitud total.[1][2]
Es un pez de agua dulce.
Se encuentran en Norteamérica.
Notropis longirostris es una especie de peces de la familia de los Cyprinidae en el orden de los Cypriniformes.
Notropis longirostris Notropis generoko animalia da. Arrainen barruko Actinopterygii klasean sailkatzen da, Cyprinidae familian.
Notropis longirostris Notropis generoko animalia da. Arrainen barruko Actinopterygii klasean sailkatzen da, Cyprinidae familian.
