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Hardhead catfish

Ariopsis felis

Izenari buruz: Its common name comes from a hard, bony plate on its head, which runs from between the eyes back towards the dorsal fin.1

Min ematen du, besterik ezEz ukituMin ematen du, baina ez dizu kalte larririk egingo.

Arrain pozoitsuak

Arantza pozoitsuakJaten du: Denetarik pixka bat

Arriskua pertsonentzat: MingarriaBenetan min handia eman dezake, baina ia inoiz ez da larria.

The hardhead catfish is a sea catfish that lives in shallow coastal waters of the northwest Atlantic and the Gulf of Mexico. It has sharp spines on its fins that can be venomous, so it is one to admire from a distance. Male hardhead catfish also carry their eggs in their mouths until they hatch.1

Non bizi den

Northwest Atlantic and Gulf of Mexico, from the southeast coast of the United States around the Florida Keys to the Gulf coast1

Ozeano Atlantikoa, Mexikoko golkoa, Karibe itsasoa

Hasiera

It is found mostly in near-shore ocean waters, and also in brackish estuaries and river mouths with sandy or muddy bottoms. It only occasionally enters fresh water. In winter it moves from shallower to deeper water.1

Luzera

25 cm eta 70 cm artean (9,8 in eta 2,3 ft artean)1

Pisua

5,5 kg (12 lb)1

Abiadura handiena

6 km/h inguru (3,7 mph)

Igeriketa, kalkulu gutxi gorabeherakoa

Zer jaten du?

It eats a wide range of food, including algae, seagrasses, crabs, shrimp, sea cucumbers, worms and small fish. It hunts on mud and sand flats, using its barbels to find prey in murky water. Younger fish eat small crustaceans, while adults mainly eat larger fish.1

Argazkia: Hardhead catfish — Hardhead catfish. Argazkia: Edgar R. Waite. Public domain, Wikimedia Commons.

Nola ezagutu

Often dirty grey on top with white underneath.1
Four barbels (whisker-like feelers) under the chin and two more at the corners of the mouth.1
A hard, bony plate between the eyes and the dorsal fin.1
Sharp, barbed, slime-covered spines on the dorsal and pectoral fins. The dorsal spine stands upright when the fish is excited.1
Typically 25 to 30 cm long, and elongated in shape.1

Askotan honekin nahasten da: The gafftopsail catfish looks very similar. The difference is that its dorsal and pectoral spines have a fleshy extension, like the fore-and-aft topsail of a ship.1

Pozoi-ahalmena

Arantza pozoitsuak

Arantza zorrotzek daramate pozoia. Zapaltzeak edo heltzeak min ematen du.

Zein arriskutsua da pertsonentzat?

Arriskua pertsonentzat: MingarriaBenetan min handia eman dezake, baina ia inoiz ez da larria.

No bite or death figures are given. Anglers generally avoid catching it because of the risk from handling the fish and its spines, and because its flesh tastes fishy compared with popular game fish.1

Zer egiten du beldurtzen denean?

When it feels threatened or excited, its dorsal spine stands upright, and its sharp, slime-covered spines are its main defence.1

Bere arantzek zulatzen bazaituzte

Sartu zauria ur beroan, pertsonak erre gabe jasan dezakeen bezain beroan (probatu zure eskuarekin), 30 eta 90 minutu artean. Lortu mediku-laguntza, batez ere harri-arrain eta bastangen kasuan.

Deitu beti lehenik zure larrialdi-zenbakira (112, 000, 911). Lehen sorospenei buruzko orientabide orokorra da hau, ez mediku-aholkua. Lehen sorospenen oinarriak

Egon seguru

Ez ukitu, ez harrapatu eta ez zirikatu inoiz animalia basati bat, txikia izan arren, eta lo edo hilda dagoela badirudi ere.
Utzi tartea. Bat aurkitzen baduzu, egon lasai, egin atzera poliki eta utzi bere bidetik joaten.
Bere arantzek zulatzen bazaituzte: egon lasai, egon geldi, deitu zure larrialdi-zenbakira (112, 000, 911) edo joan ospitalera azkar. Gogoratu nolakoa zen, argazki batek laguntzen du.

Ez dabil zure atzetik. Pozoia janaria harrapatzeko edo bere burua babesteko erabiltzen du, eta askoz nahiago du ezkutatu. Seguru egoteari buruz gehiago

Munduko zein tokitan?

Afrika Asia Europa Ipar Amerika Hego Amerika Australia eta Ozeania Ozeano Atlantikoa Karibe itsasoa Mexikoko golkoa

Zein handia da?

Zein luzea da?

Zein astuna da?

1,5 etxeko katu bezain astuna

4 banana bata bestearen atzetik jarrita bezain luzeaetxeko katu bat bezain astuna, gutxi gorabeheraigerileku handi baten luzera (50 m) igerian egin lezake 30 segundotan

Zein handia da Hardhead catfish ZUREKIN alderatuta?

Matematika hutsa zure nabigatzailean. Ez da ezer gordetzen, ezta inora bidaltzen ere.

Zein azkarra da?

Igerian ari den pertsona bat 3 km/h inguru (1,9 mph)

Hardhead catfish 6 km/h inguru (3,7 mph)

Igerilari olinpiko bat 8 km/h inguru (5 mph)

jakin beharrekoa

Datuak

Male hardhead catfish are paternal mouthbrooders: they keep the eggs and young in their mouths, and do not feed while doing so.1

Some researchers suggest they may use low-frequency sounds to detect and avoid close obstacles, which is an unusual ability for a fish.1

They can make sounds by vibrating thin bones near the swim bladder, and by grinding their throat teeth or rubbing their pectoral spines. These sounds appear to be a fright response.1

Hardhead catfish respond to chemical alarm signals released by injured members of their own species, with their activity increasing right after the signal. They are the first marine catfish found to show this type of alarm reaction.1

They can live for over 24 years.1

Pozoi-adituentzat

Izen zientifikoa: Ariopsis felis
Taldea: Arrain pozoitsuak
Familia: Ariidae2
Ordena: Siluriformes
Kontinenteak: Ozeano Atlantikoa, Mexikoko golkoa, Karibe itsasoa, Ozeanoak
Kumeak: The male carries the eggs in his mouth until they hatch, which takes roughly 8 to 11 weeks in total. Females have 20 to 65 eggs per spawning.1
Bizi-iraupena: 24 urte inguru1
Arriskua pertsonentzat: 2 / 5: Mingarria3

Datuak nondik datozen

Hardhead catfish (Wikipedia (CC BY-SA 4.0))
Ariopsis felis (iNaturalist): izenak eta sailkapena.
Venom Wiki: arrisku-maila, ohiko tamaina eta abiadura-kalkulua geureak dira. Ikusi nola kalkulatzen ditugun: Nola baloratzen dugun arriskua.

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