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Inombolo 1257 kwezi-1 402

Spotted ratfish

Hydrolagus colliei

Malunga negama: The genus name Hydrolagus comes from Greek words meaning water and hare. The species name honours Alexander Collie, a ship's surgeon and early naturalist.1

Kubuhlungu njeMusa ukuchukumisaKubuhlungu, kodwa akusayi kukwenzakalisa kakhulu.

Iintlanzi ezinetyhefu

Amava anetyhefuSitya: Inyama

Ingozi ebantwini: KubuhlunguKunokuba buhlungu ngokwenene, kodwa phantse akusoze kube kubi kakhulu.

The spotted ratfish is a chimaera, a cartilage fish related to sharks and rays. It lives in the northeastern Pacific Ocean, and divers often see it at night in the Pacific Northwest. It gets its name from its pointed, rat-like tail.1

Sihlala

Northeastern Pacific Ocean, from Alaska to Baja California, plus an isolated population in the Gulf of California1

uLwandlekazi lwePasifiki, iGulf yaseCalifornia

Ekhaya

It lives near the sea floor in sandy, muddy or rocky reef areas. Most live in deep water, but in the north they live closer to shore, and off California they can be found as shallow as 30 m. Divers meet it most often at night, and its leathery egg cases are laid on muddy or sandy bottoms, where divers sometimes mistake them for inanimate objects.1

Ubude

14 cm ukuya ku-97 cm (5,5 in ukuya ku-3,2 ft)1

Esona santya siphezulu

malunga ne-15 km/h (9,3 mph)

Ukuqubha, uqikelelo nje

Sitya ntoni?

It swims slowly above the sea floor and finds food by smell, usually hunting at night when it moves into shallow water. It is especially drawn to crunchy prey such as crabs and clams, and also eats shrimp, worms, small fish, small crustaceans and sea stars.1

Ifoto ka-Spotted ratfish — Spotted ratfish. Ifoto: Brian Gratwicke. CC BY 4.0, iNaturalist.

Indlela yokusiqaphela

Smooth, scaleless skin that is silvery-bronze, often with gold, blue and green shine1
Speckled white spots along the back1
Large, triangular pectoral fins that stick straight out from the sides, like airplane wings1
A pointed, rat-like tail that makes up almost half of its total length1
Large emerald green eyes and a duckbill-shaped snout1

Amandla etyhefu yokuluma nokuhlaba

Amava anetyhefu

Amava abukhali aphethe ityhefu. Ukusinyathela okanye ukusibamba kubuhlungu.

Ityhefu yaso yokuluma okanye yokuhlaba yenza ntoni?

The spine on the leading edge of its dorsal fin is grooved and connected to a venom gland at its base. The venom is mildly toxic. A sting from the spine causes a painful wound.1

Siyingozi kangakanani ebantwini?

Ingozi ebantwini: KubuhlunguKunokuba buhlungu ngokwenene, kodwa phantse akusoze kube kubi kakhulu.

It does not present a serious danger to humans, but its spines can cause painful wounds. Harbor seals have been known to die after swallowing spotted ratfish, when a spine pierced the stomach or esophagus.1

Senza ntoni xa soyika?

It usually keeps a safe distance from divers and is not aggressive, but it will defend its territory with the spine on its dorsal fin if it feels invaded.1

Ukuba amava aso ayakugwaza

Faka inxeba emanzini ashushu, ashushu kangangoko umntu angakwazi ukunyamezela ngaphandle kokutshiswa (wavavanye ngesandla sakho), imizuzu engama-30 ukuya kwengama-90. Fumana uncedo lwezonyango, ingakumbi kwii-stonefish nakwii-stingray.

Soloko utsalela inombolo kaxakeka kuqala (112, 000, 911). Esi sisikhokelo soncedo lokuqala ngokubanzi, asilocebiso lwezonyango. Iziseko zoncedo lokuqala

Hlala ukhuselekile

Ungaze uchukumise, ubambe okanye uqhule isilwanyana sasendle, nokuba sincinci, kwaye nokuba sibonakala silele okanye sifile.
Sinike indawo. Ukuba udibana naso, hlala uzolile, buyela umva kancinci kwaye usiyeke sihambe ngendlela yaso.
Ukuba amava aso ayakugwaza: hlala uzolile, musa ukushukuma, tsalela inombolo kaxakeka (112, 000, 911) okanye uye esibhedlele ngokukhawuleza. Khumbula ukuba sasikhangeleka njani, ifoto iyanceda.

Asikuzingeli. Sisebenzisa ityhefu yaso ukubamba ukutya okanye ukuzikhusela, kwaye singakhetha ukuzimela. Okungakumbi malunga nokuhlala ukhuselekile

Phi emhlabeni?

IAfrika IAsiya IYurophu uMntla Melika uMzantsi Melika IOstreliya neOceania uLwandlekazi lwePasifiki iGulf yaseCalifornia

Sikhulu kangakanani?

Side kangakanani?

ubude obulingana neekati zasekhaya eziyi-2 ukusuka empumlweni ukuya emsileniubude obulingana neebhanana eziyi-5 zilandelelanasingaqubha ubude bechibi elikhulu lokuqubha (50 m) ngemizuzwana eyi-12

U-Spotted ratfish mkhulu kangakanani xa uthelekisa NAWE?

Zizibalo nje kwibhrawuza yakho. Akukho nto igcinwayo okanye ithunyelwa naphi na.

Sikhawuleza kangakanani?

Umqubhi weOlimpiki malunga ne-8 km/h (5 mph)

Spotted ratfish malunga ne-15 km/h (9,3 mph)

Ihlengesi liqubha ngamandla alo onke malunga ne-35 km/h (22 mph)

kufanelekile ukwazi

Iinyaniso

Adult males have a club-like cephalic clasper on the head, an organ not found in any other vertebrate, which they use to hold on to females during courtship.1

Its large eyes reflect light, much like the eyes of a cat.1

It swims with its large pectoral fins, and its barrel rolls and corkscrew turns have been described as aquatic flight.1

Its teeth are plate-shaped, mineralised and permanent, unlike the easily replaced teeth of sharks, and they help it grind prey.1

Its ampullary organs on the head detect electric fields, and they are homologous to the ampullae of Lorenzini found in sharks and rays.1

Its meat is not typically eaten by humans and it is not commercially caught.1

Kwiingcali zetyhefu

Igama lenzululwazi: Hydrolagus colliei
Iqela: Iintlanzi ezinetyhefu
Usapho: Chimaeridae2
Ucwangco: Chimaeriformes
Amazwekazi: uLwandlekazi lwePasifiki, iGulf yaseCalifornia, Iilwandlekazi
Iintsana: Like some sharks, it lays eggs; the female releases up to two fertilised eggs every 10–14 days in spring to autumn, and development can take up to a year.1
Ingozi ebantwini: 2 / 5: Kubuhlungu3

Apho iinyaniso zivela khona

Spotted ratfish (Wikipedia (CC BY-SA 4.0))
Hydrolagus colliei (iNaturalist): amagama nokuhlelwa.
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