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Hardhead catfish

Ariopsis felis

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

Maak net seerMoenie aanraak nieDit maak seer, maar dit sal jou nie ernstig skade doen nie.

Giftige visse

Giftige stekelsEet: 'n Bietjie van alles

Gevaar vir mense: PynlikDit kan regtig seermaak, maar dit is amper nooit ernstig nie.

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

Leef in

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

Atlantiese Oseaan, Golf van Meksiko, Karibiese See

Tuis

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

Lengte

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

Gewig

5,5 kg (12 lb)1

Topspoed

omtrent 6 km/h (3,7 mph)

Swem, rowwe skatting

Wat eet dit?

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

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

Hoe om dit te herken

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

Word dikwels verwar met: 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

Gifkrag

Giftige stekels

Skerp stekels dra die gif. Dit maak seer as jy daarop trap of dit gryp.

Hoe gevaarlik is dit vir mense?

Gevaar vir mense: PynlikDit kan regtig seermaak, maar dit is amper nooit ernstig nie.

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

Wat doen dit as dit bang is?

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

As sy stekels jou steek

Sit die wond in warm water, so warm as wat die persoon kan verdra sonder om te brand (toets dit met jou eie hand), vir 30 tot 90 minute. Kry mediese hulp, veral vir klipvisse en pylsterte.

Bel altyd eers jou noodnommer (112, 000, 911). Dit is algemene noodhulpraad, nie mediese advies nie. Noodhulp-basiese beginsels

Bly veilig

Moet nooit aan 'n wilde dier raak, dit vang of terg nie, selfs nie 'n kleintjie nie, en selfs nie as dit lyk of dit slaap of dood is nie.
Gee dit spasie. As jy een raakloop, bly kalm, stap stadig terug en laat dit sy eie pad gaan.
As sy stekels jou steek: bly kalm, bly stil, bel jou noodnommer (112, 000, 911) of kom vinnig by 'n hospitaal uit. Onthou hoe dit gelyk het, 'n foto help.

Dit is nie uit om jou te kry nie. Dit gebruik sy gif om kos te vang of om homself te beskerm, en kruip baie eerder weg. Meer oor veilig bly

Waar in die wêreld?

Afrika Asië Europa Noord-Amerika Suid-Amerika Australië & Oseanië Atlantiese Oseaan Karibiese See Golf van Meksiko

Hoe groot is dit?

Hoe lank is dit?

Hoe swaar is dit?

so swaar soos 1,5 huiskatte

so lank soos 4 piesangs punt aan puntomtrent so swaar soos 'n huiskatkan die lengte van 'n groot swembad (50 m) in 30 sekondes swem

Hoe groot is Hardhead catfish in vergelyking met JOU?

Net wiskunde in jou blaaier. Niks word gestoor of enige plek heen gestuur nie.

Hoe vinnig is dit?

'n Mens wat swem omtrent 3 km/h (1,9 mph)

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

'n Olimpiese swemmer omtrent 8 km/h (5 mph)

die moeite werd om te weet

Feite

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

Vir gifkenners

Wetenskaplike naam: Ariopsis felis
Groep: Giftige visse
Familie: Ariidae2
Orde: Siluriformes
Kontinente: Atlantiese Oseaan, Golf van Meksiko, Karibiese See, Die oseane
Babas: 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
Lewensduur: omtrent 24 jaar1
Gevaar vir mense: 2 / 5: Pynlik3

Waar die feite vandaan kom

Hardhead catfish (Wikipedia (CC BY-SA 4.0))
Ariopsis felis (iNaturalist): name en klassifikasie.
Venom Wiki: die gevaarvlak, die tipiese grootte en die spoedskatting is ons eie. Kyk hoe ons dit uitwerk: Hoe ons gevaar gradeer.

Elke feit op hierdie bladsy het 'n nommer wat na sy bron wys. As ons iets verkeerd het, jammer, ons is dierfanatici, nie 'n wetenskaplike joernaal nie. Laat weet ons by [email protected] en ons maak dit reg.

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