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Dactyloscopids live buried in the sand with only the eyes, along with the snout and sometimes the top of the head, uncovered. They usually occupy shallow warm water at depths between two and 15 m, but one species, Gillellus healae, has been found between five and 137 m. Some groups inhabit bare, open beaches in or behind the surge zone, but others are found exclusively in patches of sand that are near rocks, coral structures, or marl bottoms. A few species can be found in estuaries, and at least one enters fresh water.
Habitat Regions: temperate ; tropical ; saltwater or marine
Aquatic Biomes: benthic ; coastal
Other Habitat Features: estuarine ; intertidal or littoral
Dactyloscopids derive their common name, sand stargazers, from their eyes, which protrude from the tops of their heads, sometimes on stalks. Sand stargazers usually remain burrowed into the sand with only the eyes, along with the snout and sometimes the top of the head, uncovered. Members of this family occupy shallow warm waters and are carnivorous. They are small, cryptic fishes and little is known about their behavior or reproductive habits. There are nine genera in the family and about 41 species.
No information was found on development in Dactyloscopidae.
There is no known conservation threat to any members of Dactyloscopidae.
No information was found on communication in Dactyloscopidae. Because their eyes are placed on top of their heads, often on stalks, so as to remain uncovered by sand, it is logical to infer that they perceive their surroundings visually.
Perception Channels: visual ; tactile ; chemical
No specific information was found concerning any negative impacts to humans.
No information was found on human importance of Dactyloscopidae.
Sand stargazers occupy a specific habitat, that is, sandy bottoms of shallow warm waters, and in that setting impact the tiny fishes and invertebrates that serve as their prey.
Sand stargazers are carnivorous, lying in wait under the sand to attack small fishes and invertebrates.
Primary Diet: carnivore (Piscivore , Eats non-insect arthropods)
Dactyloscopids, or sand stargazers, are found in tropical and warm temperate waters of the western hemisphere. The Atlantic Ocean (from the United States to Brazil) contains 17 species, and the Pacific Ocean (from the Gulf of California to Chile) contains 24.
Biogeographic Regions: nearctic (Native ); neotropical (Native ); atlantic ocean (Native ); pacific ocean (Native )
No information was found on lifespan of dactyloscopids.
Sand stargazers (family Dactyloscopidae) are small fishes adapted to burrowing in the sand. Their eyes are situated on the top of the head, sometimes on stalks, and their nostrils are tubular. They have upturned mouths, and fingerlike projections (fimbriae) line the mouth and gill covers, keeping sand out of the gills and mouth. These fish maintain water flow through the gills with a branchiostegal pump. Sand stargazers are covered with cycloid scales. The dorsal fin, which contains 7-23 spines and 12-36 soft rays, may be divided or continuous. The pelvic fins have three thickened rays with tips that are free from the fin membrane. The largest dactyloscopids reach 17 cm, but most are less than six cm. They are colored to blend in with their sandy environment: most are whitish or drab brown, and many have red-tinged or dark mottling along the back and head. (Click here to see a fish diagram)
Other Physical Features: ectothermic ; bilateral symmetry
Sexual Dimorphism: sexes alike
Sand stargazers conceal themselves from predators by hiding under the sand. They are cryptically colored, so any exposed parts blend in well with the sand.
Anti-predator Adaptations: cryptic
No information was found on mating systems in Dactyloscopidae.
While no information was found on reproduction in Dactyloscopidae, blennies (which are in the same suborder Blennioidei) in general tend to lay relatively large eggs that adhere to a surface. In the case of sand stargazers, eggs may adhere to each other, as males carry them in two clumps under the pectoral fins.
Key Reproductive Features: sexual ; fertilization (External ); oviparous
Sand stargazers display a unique trait among fishes in that males guard eggs by carrying them in two balls, one in the “armpit” (axilla) of each pectoral fin.
Parental Investment: male parental care
Els dactiloscòpids (Dactyloscopidae) són una família de peixos marins incluída en l'ordre Perciformes.
Existeixen 44 espècies agrupades en 9 gèneres:
Els dactiloscòpids (Dactyloscopidae) són una família de peixos marins incluída en l'ordre Perciformes.
Die Sandsterngucker (Dactyloscopidae) sind eine Familie sehr kleiner, bodenbewohnender Fische aus der Unterordnung der Schleimfischartigen (Blennioidei).
Die nur 2,5 bis 15 Zentimeter lang werdenden Tiere besitzen einen langgestreckten Körper, ein stark oberständiges Maul, einen breiten Kopf und stark hervortretende, nach oben gerichtete Augen. Ihre Lippen sind mit fleischigen Fransen versehen; die Zähne sind winzig. Die Kiemenöffnung ist groß und gibt die Kiemenmembran frei. Der Kiemendeckel ist an seinem Oberrand mit 4 bis 25 Hautfrasen bestückt. Die kehlständigen Bauchflossen haben nur einen Hartstrahl und drei Weichstrahlen. Die Rückenflosse ist lang und hat 7 bis 23 Hart- und 12 bis 36 Weichstrahlen. Beide Teile der Rückenflosse können getrennt, aber auch zusammengewachsen sein. Auch die Afterflosse ist lang mit 21 bis 41 Weichstrahlen. Die Fische haben relativ große Rundschuppen; Bauch und Kopf sind schuppenlos. Die Seitenlinie beginnt hoch über den Brustflossen und biegt dann nach unten zur Seitenmittellinie ab. Sandsterngucker sind von bräunlicher, rötlicher oder blasser Farbe, manchmal mit einem Marmormuster oder gestreift.
Bei einigen Sandsternguckern der Gattung Gillellus (wie z. B. Gillellus uranidea) konnten Wissenschaftler die Fähigkeit zur Biolumineszenz nachweisen.[1]
Die Tiere bewohnen die tropischen und subtropischen Küstenregionen Amerikas. 19 Arten leben auf der atlantischen Seite von der Küste der USA bis nach Brasilien, 24 Arten leben an der Ostküste des Pazifik vom Golf von Kalifornien bis nach Chile.
Sandsterngucker leben im Meer von der Gezeitenzone bis in Tiefen von 100 Metern, einige Arten im Brackwasser von Flussmündungen oder in den Unterläufen von Flüssen. Sie graben sich in den sandigen Boden ein, so dass nur noch Maul und Augen herausschauen. Die Männchen einiger Arten betreiben Brutpflege und beschützen ihren Laich zwischen den breiten Brustflossen.
Es gibt neun Gattungen und 48 Arten:
Die Sandsterngucker (Dactyloscopidae) sind eine Familie sehr kleiner, bodenbewohnender Fische aus der Unterordnung der Schleimfischartigen (Blennioidei).
Sand stargazers are blennioids; perciform marine fish of the family Dactyloscopidae. Found in temperate to tropical waters of North and South America; some may also inhabit brackish environments. The giant sand stargazer (Dactylagnus mundus) is the largest at 15 cm in length; all other species are under 10 cm.
These blennies are named well: sand stargazers have protruding eyes on the top of their heads, fixed in an upward gaze, and may be on stalks. Their large mouths are also upturned. The dorsal fin is long and may or may not be continuous, with seven to 23 spines; the pelvic fins are situated below the throat and possess one spine. The anal fin is equally long and flowing. The mouth is fringed, and like the upper edge of the operculum (the gill cover), this fringe is divided into finger-like structures. The body is greatly elongated, and coloration is generally drab.
As their name would suggest, sand stargazers spend most of their time buried in sandy substrates waiting for unsuspecting prey; only the eyes, nose and mouth are usually visible. Their mode of respiration is also unique among the blennioids, using a branchiostegal rather than opercular pump; this is thought to be an adaptation to their largely sedentary, obscured lives. Sand stargazers generally stay within shallow (< 10 m) intertidal zones in areas protected from surges. Small invertebrates and fish make up the bulk of the sand stargazer's diet.
The family name Dactyloscopidae derives from the Greek words daktylos meaning "finger" (a reference to the divided mouth and operculum fringes) and skopein meaning "to watch".
Sand stargazers are blennioids; perciform marine fish of the family Dactyloscopidae. Found in temperate to tropical waters of North and South America; some may also inhabit brackish environments. The giant sand stargazer (Dactylagnus mundus) is the largest at 15 cm in length; all other species are under 10 cm.
These blennies are named well: sand stargazers have protruding eyes on the top of their heads, fixed in an upward gaze, and may be on stalks. Their large mouths are also upturned. The dorsal fin is long and may or may not be continuous, with seven to 23 spines; the pelvic fins are situated below the throat and possess one spine. The anal fin is equally long and flowing. The mouth is fringed, and like the upper edge of the operculum (the gill cover), this fringe is divided into finger-like structures. The body is greatly elongated, and coloration is generally drab.
As their name would suggest, sand stargazers spend most of their time buried in sandy substrates waiting for unsuspecting prey; only the eyes, nose and mouth are usually visible. Their mode of respiration is also unique among the blennioids, using a branchiostegal rather than opercular pump; this is thought to be an adaptation to their largely sedentary, obscured lives. Sand stargazers generally stay within shallow (< 10 m) intertidal zones in areas protected from surges. Small invertebrates and fish make up the bulk of the sand stargazer's diet.
The family name Dactyloscopidae derives from the Greek words daktylos meaning "finger" (a reference to the divided mouth and operculum fringes) and skopein meaning "to watch".
Los miraestrellas (Dactyloscopidae) son una familia de peces marinos incluida en el orden perciformes, distribuidos por aguas templadas a tropicales de Norteamérica a Sudamérica.[1]
Generalmente tienen flecos en los labios, subdivididos semejando dedos, así como también tienen salientes en la parte superior del opérculo similares a dedos, de donde deriva del griego su nombre: daktylos (dedos).[2] Los ojos están situados dórsalmente y a veces son protrusibles, con o sin pedúnculo ocular.[1] Tienen una larga aleta dorsal que recorre todo el cuerpo, con numerosas espinas delante y radios blandos en la parte posterior.[1]
La longitud máxima descrita ha sido de unos 15 cm.[1]
Suelen estar enterrados en la arena, bombeando agua a través de las branquias para respirar mediante una bomba situada en el opérculo.[1]
Existen 44 especies agrupadas en 9 géneros:
Los miraestrellas (Dactyloscopidae) son una familia de peces marinos incluida en el orden perciformes, distribuidos por aguas templadas a tropicales de Norteamérica a Sudamérica.
Generalmente tienen flecos en los labios, subdivididos semejando dedos, así como también tienen salientes en la parte superior del opérculo similares a dedos, de donde deriva del griego su nombre: daktylos (dedos). Los ojos están situados dórsalmente y a veces son protrusibles, con o sin pedúnculo ocular. Tienen una larga aleta dorsal que recorre todo el cuerpo, con numerosas espinas delante y radios blandos en la parte posterior.
La longitud máxima descrita ha sido de unos 15 cm.
Suelen estar enterrados en la arena, bombeando agua a través de las branquias para respirar mediante una bomba situada en el opérculo.
Dactyloscopidae arrain pertziformeen familia da, Amerikako ur epel eta tropikaletan bizi dena.[1]
FishBaseren arabera, familiak egun 48 espezie ditu, 9 generotan banaturik:[2]
Artikulu hau biologiari buruzko zirriborroa da. Wikipedia lagun dezakezu edukia osatuz. Dactyloscopidae arrain pertziformeen familia da, Amerikako ur epel eta tropikaletan bizi dena.
Ripsitähystäjät (Dactyloscopidae) on ahvenkaloihin kuuluva heimo. Heimon lejaj tavataan trooppisista vesistä Pohjois- ja telä-Amerikan rannikoilta.
Ripsitähystäjiin kuuluu noin 41 lajia yhdeksässä suvussa, esimerkiksi rusoripsitähystäjä (Dactyloscopus pectoralis). Ulkonäöltään ripsitähystäjät ovat pitkulaisia kaloja ja muistuttavat paljon kookkaampia taivaantähystäjiä (Uranoscopidae). Eräs laji voi saavuttaa 15–17 cm:n pituuden, mutta yleensä ne jäävät pienemmiksi, alle 6 cm pitkiksi. Silmät sijatsevat lajeilla päälaella ja ovat liikuteltavissa. Suu on vino ja suuntautunut ylöspäin. Rintaevät ovat kaloilla kookkaat, ja pitkä selkäevä voi olla yhtenäinen tai jakautunut kahteen osaan. Ripsitähystäjäjien ainutlaatuinen piirre viuhkaeväisten kalojen joukossa on niiden hengitystapa. Kalojen suussa ja kiduskansissa on ripsimäisiä tai sormimaisia ulokkeita, joiden tehtävänä on estää hiekan pääsy kiduksiin. Väriltään ripsitähystäjät ovat yleensä ruskehtavia.[2][3][4][5]
Ripsitähystäjiä tavataan trooppisista ja subtrooppisista vesistä Atlantin rannikolta Yhdysvalloista Brasilian ja Tyynenemren rannikolta yhdysvalloita Chileen. Ne elävät yleensä lähellä rantaa matalissa vesissä alle 15 metrin syvyydessä, mutta Gillellus semicinctus-lajia on tavattu lähes 140 metrin syvyydestä. Ripsitähystäjät viettävät piilottelevaa elämää kaivautuneena hiekkaan, niin että vain silmät näkyvät. Osa lajeista suosii kivikkoisia alueita tai koralliriuttoja, ja jotkut elävät myös murtovedessä. Niiden ravintoa ovat pienet kalat ja selkärangattomat eläimet, joita ripsitähystäjät vaanivat kaivautneena pohjaan. Kalojen lisääntymisestä ei tiedetä paljoa, mutta koiraat vartioivat munia pitämällä niitä palloina rintaevissään.[2][3][4][5]
Ripsitähystäjät (Dactyloscopidae) on ahvenkaloihin kuuluva heimo. Heimon lejaj tavataan trooppisista vesistä Pohjois- ja telä-Amerikan rannikoilta.
Les Dactyloscopidae sont une famille de poissons de l'ordre des Perciformes.
Selon World Register of Marine Species (10 mars 2017)[1] :
Les Dactyloscopidae sont une famille de poissons de l'ordre des Perciformes.
Dactyloscopidae, porodica riba iz reda Perciformes ili grgečki rasprostranjenih u toplim i tropskim morima Atlantika i Pacifika uz obale Amerike, ukopane u pijesak, iz kojih iz kojeg vire samo oči na na vrhu glave. Ove ribe imaju uglavnom manje od deset centimetara dužine, a najveća je među njima Dactylagnus mundus, 15 cm.
Porodica se sastoji od 9 rodova: Dactylagnus, Dactyloscopus, Gillellus, Heteristius, Leurochilus, Myxodagnus, Platygillellus, Sindoscopus, Storrsia[1].
Dactyloscopidae, porodica riba iz reda Perciformes ili grgečki rasprostranjenih u toplim i tropskim morima Atlantika i Pacifika uz obale Amerike, ukopane u pijesak, iz kojih iz kojeg vire samo oči na na vrhu glave. Ove ribe imaju uglavnom manje od deset centimetara dužine, a najveća je među njima Dactylagnus mundus, 15 cm.
Porodica se sastoji od 9 rodova: Dactylagnus, Dactyloscopus, Gillellus, Heteristius, Leurochilus, Myxodagnus, Platygillellus, Sindoscopus, Storrsia.
I Dactyloscopidae sono una famiglia di pesci ossei marini e d'acqua dolce dell'ordine Perciformes.
L'areale della famiglia è limitato alle acque del continente americano, soprattutto nelle fasce tropicali o subtropicali. Popolano le acque costiere e molte specie mostrano una certa eurialinità penetrando negli estuari e in altre acque salmastre. Poche specie vivono stabilmente in acque dolci.[1]
Hanno abitudini bentoniche e vivono su fondali sabbiosi in cui si infossano frequentemente[1].
L'spetto dei Dactyloscopidae è vagamente simile a quello delle tracine o dei pesci prete con cui condividono gli habitat. Hanno corpo allungato ed appiattito lateralmente con grande bocca quasi verticale e occhi posti sul profilo dorsale del capo. In diverse specie gli occhi possono essere protrusi e in altre sono portati su corti peduncoli. I bordi delle mascelle sono ornati da frange carnose; sul bordo dell'opercolo branchiale sono presenti lobi digitiformi. La pinna dorsale è molto lunga, può essere divisa in due parti; la parte anteriore è composta da raggi spinosi brevi. La pinna anale è lunga quasi quanto la dorsale ed è composta di soli raggi molli. Le pinne ventrali sono poste molto anteriormente e sono composte di 4 raggi di cui il primo spinoso. La linea laterale è dritta nella parte posteriore ma ha una vistosa curva verso l'alto in corrispondenza delle pinne pettorali[1].
La taglia è molto piccola, di solito inferiore a 10 cm.[2] La lunghezza massima è di circa 15 cm[1].
I Dactyloscopidae sono una famiglia di pesci ossei marini e d'acqua dolce dell'ordine Perciformes.
Amerikiniai žvaigždininkai (lot. Dactyloscopidae, angl. Sand stargazers) – ešeržuvių (Perciformes) būrio žuvų šeima. Paplitusios Atlanto ir Ramiojo vandenynų platumų priekrantėse ties Amerika.
Amerikiniai žvaigždininkai (lot. Dactyloscopidae, angl. Sand stargazers) – ešeržuvių (Perciformes) būrio žuvų šeima. Paplitusios Atlanto ir Ramiojo vandenynų platumų priekrantėse ties Amerika.
Zandsterrenkijkers (Dactyloscopidae) zijn een familie van baarsachtige vissen. Alle vissen uit deze familie zijn zoutwatervissen en ze worden aangetroffen in gematigde tot tropische wateren in Noord- en Zuid-Amerika. Sommige soorten gedijen ook in brak water. Er worden 44 soorten in negen geslachten onderscheiden, waarvan Dactylagnus mundus, met 15 centimeter lengte, de grootste is. De overige soorten zijn allemaal kleiner dan 10 centimeter.
De zandsterrenkijkers zijn zo genoemd vanwege de uitpuilende ogen bovenop hun kop. Hun grote bek is ook naar boven gericht. Het lichaam is langgerekt. De rugvin van deze vissen is lang en niet altijd ononderbroken, met 7 tot 23 stralen. De aarsvin heeft 21-41 zachte stralen. De basis ervan is ongeveer even lang als die van de rugvin. De buikvinnen zitten achter de keel en bezitten één straal.
Zoals de naam al suggereert, wachten de vissen, ingegraven in een zandige bodem, op een prooi. Alleen de ogen, snuit en bek zijn gewoonlijk zichtbaar. De vissen leven in ondiep (< 10 meter) water en ze voeden zich met kleine ongewervelden en vissen.
De naam Dactyloscopidae komt van de Griekse woorden daktylos, dat "vinger" betekent (verwijzend naar de scheiding tussen bek en operculum), en skopein, dat "zien" betekent.
Zandsterrenkijkers (Dactyloscopidae) zijn een familie van baarsachtige vissen. Alle vissen uit deze familie zijn zoutwatervissen en ze worden aangetroffen in gematigde tot tropische wateren in Noord- en Zuid-Amerika. Sommige soorten gedijen ook in brak water. Er worden 44 soorten in negen geslachten onderscheiden, waarvan Dactylagnus mundus, met 15 centimeter lengte, de grootste is. De overige soorten zijn allemaal kleiner dan 10 centimeter.
Dactyloscopidae é uma família de peixes da subordem Blennioidei.
Dactyloscopidae é uma família de peixes da subordem Blennioidei.
Dactyloscopidae[1] är en familj av fiskar som ingår i ordningen abborrartade fiskar.[1] Enligt Catalogue of Life omfattar familjen Dactyloscopidae 48 arter[1].
Arterna förekommer i havet kring Nord-, Central- och Sydamerika samt i angränsande vikar och flodmynningar. De besöker sällan sötvatten. Familjens medlemmar når en längd upp till 15 cm. De gräver sig ofta ner i havets botten. Det vetenskapliga namnet är bildat av de grekiska orden daktylos (finger) och skopein (synlig).[2]
Släkten enligt Catalogue of Life[1]:
Wikispecies har information om Dactyloscopidae.
Denna fiskrelaterade artikel saknar väsentlig information. Du kan hjälpa till genom att tillföra sådan.
Dactyloscopidae är en familj av fiskar som ingår i ordningen abborrartade fiskar. Enligt Catalogue of Life omfattar familjen Dactyloscopidae 48 arter.
Arterna förekommer i havet kring Nord-, Central- och Sydamerika samt i angränsande vikar och flodmynningar. De besöker sällan sötvatten. Familjens medlemmar når en längd upp till 15 cm. De gräver sig ofta ner i havets botten. Det vetenskapliga namnet är bildat av de grekiska orden daktylos (finger) och skopein (synlig).
Släkten enligt Catalogue of Life:
Dactylagnus Dactyloscopus Gillellus Heteristius Leurochilus Myxodagnus Platygillellus Sindoscopus Storrsia柄眼魚科（学名：Dactyloscopidae）為輻鰭魚綱鱸形目䲁亞目的其中一個科。
柄眼魚科其下分9個屬，如下：
모래통구멍과(Dactyloscopidae)는 베도라치목에 속하는 조기어류 물고기 과의 하나이다.[1] 농어목으로 분류하기도 하는 해양 어류이다. 북아메리카와 남아메리카의 온대와 열대 수역에서 발견되며, 일부 종은 기수 환경에서도 서식한다. 가장 큰 종은 닥틸라그누스 문두스(Dactylagnus mundus)으로 최대 15cm이며, 대부분이 10cm 이하이다.
다음은 베탕쿠르(Betancur) 등의 연구에 기초한 계통 분류이다.[2][3]
베도라치상목 또는 베도라치목 학치목 베도라치목 또는 베도라치아목모래통구멍과(Dactyloscopidae)는 베도라치목에 속하는 조기어류 물고기 과의 하나이다. 농어목으로 분류하기도 하는 해양 어류이다. 북아메리카와 남아메리카의 온대와 열대 수역에서 발견되며, 일부 종은 기수 환경에서도 서식한다. 가장 큰 종은 닥틸라그누스 문두스(Dactylagnus mundus)으로 최대 15cm이며, 대부분이 10cm 이하이다.
