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Inombolo 1217 kwezi-1 402

Dusky spinefoot

Siganus luridus

Malunga negama: Its scientific name, luridus, means 'pale yellow'. The collector of the first specimen gave it this name.1

Kubuhlungu njeMusa ukuchukumisaKubuhlungu, kodwa akusayi kukwenzakalisa kakhulu.

Iintlanzi ezinetyhefu

Amava anetyhefuSitya: Izityalo

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

The dusky spinefoot is a rabbitfish with venomous spines on its fins. It is native to the western Indian Ocean and has spread into the Mediterranean Sea through the Suez Canal. People also catch it as a food fish.1

Sihlala

Western Indian Ocean, from Mozambique north to the Red Sea, and the Mediterranean Sea1

uLwandlekazi lwaseIndiya, uLwandle oluBomvu, uLwandle lweMeditera, uLwandle lwaseArabhiya neGulf yasePersi

Ekhaya

It lives at depths of 2 to 40 metres, in waters over hard surfaces such as coral and rocky reefs. Adults are often seen in schools, though single fish also occur.1

Ubude

30 cm (1 ft)1

Esona santya siphezulu

malunga ne-5 km/h (3,1 mph)

Ukuqubha, uqikelelo nje

Sitya ntoni?

Adults graze on algae from the seabed. They feed on larger brown algae and other large water plants called macrophytes.1

Ifoto ka-Dusky spinefoot — Dusky spinefoot. Ifoto: Roberto Pillon. CC BY 3.0, Wikimedia Commons.

Indlela yokusiqaphela

Compressed (flattened from side to side) body1
Normally olive green to dark brown, with a mottled pattern1
Pale yellow pectoral fins and dark bars on the tail fin1
Dorsal fin with 13 to 14 spines, and a single row of incisor-like teeth in the jaws1
Usually about 20 cm long, and up to 30 cm1

Amandla etyhefu yokuluma nokuhlaba

Amava anetyhefu

Amava abukhali aphethe ityhefu. Ukusinyathela okanye ukusibamba kubuhlungu.

Ityhefu yaso yokuluma okanye yokuhlaba yenza ntoni?

The spines on its fins produce venom. In a study of a related rabbitfish, the venom was found to be similar to stonefish venom.1

Siyingozi kangakanani ebantwini?

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

When eaten, it has been linked to cases of mild ciguatera-like poisoning. Ciguatera is a form of food poisoning caused by toxins in some reef fish.1

Senza ntoni xa soyika?

When threatened, it stops suddenly and raises its dorsal, anal and pelvic fins, showing an array of venomous spines around its body.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 lwaseIndiya uLwandle lweMeditera uLwandle oluBomvu uLwandle lwaseArabhiya neGulf yasePersi

Sikhulu kangakanani?

Side kangakanani?

ubude obulingana neebhloko zokudlala zokwakha eziyi-9 zilandelelanasingaqubha ubude bechibi elikhulu lokuqubha (50 m) ngemizuzwana eyi-36

U-Dusky spinefoot mkhulu kangakanani xa uthelekisa NAWE?

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

Sikhawuleza kangakanani?

Umntu oqubhayo malunga ne-3 km/h (1,9 mph)

Dusky spinefoot malunga ne-5 km/h (3,1 mph)

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

kufanelekile ukwazi

Iinyaniso

Its spines are mainly a defence against predators. The highest predation pressure falls on its larvae and planktonic stages.1

It came to the Mediterranean through the Suez Canal. It was first recorded off Israel in 1955 and has since spread as far west as the French Mediterranean coast and the Adriatic Sea.1

It is a daytime feeder. At night it hides in cavities in the reef.1

It is an important fish for fisheries in the Mediterranean. In Kenya, it is caught mainly as bycatch.1

Kwiingcali zetyhefu

Igama lenzululwazi: Siganus luridus
Iqela: Iintlanzi ezinetyhefu
Usapho: Siganidae2
Ucwangco: Acanthuriformes
Amazwekazi: uLwandlekazi lwaseIndiya, uLwandle oluBomvu, uLwandle lweMeditera, uLwandle lwaseArabhiya neGulf yasePersi, Iilwandlekazi
Iintsana: It spawns in April and from June to August, when seawater is between 24 and 29 °C. The eggs and larvae drift in the plankton near the surface.1
Ingozi ebantwini: 2 / 5: Kubuhlungu3

Apho iinyaniso zivela khona

Dusky spinefoot (Wikipedia (CC BY-SA 4.0))
Siganus luridus (iNaturalist): amagama nokuhlelwa.
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