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Spotted ratfish

Hydrolagus colliei
O imenu: 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
Samo boliNe dirajBoli, ali ti neće ozbiljno naštetiti.
Otrovne ribe Otrovne bodljeJede: Meso
Opasnost za ljude: BolnoMože jako boljeti, ali gotovo nikad nije ozbiljno.

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

Živi u
Northeastern Pacific Ocean, from Alaska to Baja California, plus an isolated population in the Gulf of California1
Tihi ocean, Kalifornijski zaljev
Početna
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
Duljina
od 14 cm do 97 cm (od 5,5 in do 3,2 ft)1
Najveća brzina
oko 15 km/h (9,3 mph)
Plivanje, gruba procjena
Što jede?
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
Stvarno!Fotografija: Spotted ratfish
Spotted ratfish. Fotografija: Brian Gratwicke. CC BY 4.0, iNaturalist.

Kako ga prepoznati

  • 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

Otrovna snaga

Otrovne bodlje

Oštre bodlje nose otrov. Boli ako ga nagaziš ili zgrabiš.

Što radi njegov otrov kad ugrize ili ubode?

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

Koliko je opasno za ljude?

Opasnost za ljude: BolnoMože jako boljeti, ali gotovo nikad nije ozbiljno.

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

Što radi kad se uplaši?

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

Ako te ubodu njegove bodlje

  • Stavi ranu u vruću vodu, toliko vruću koliko osoba može podnijeti bez opeklina (provjeri je vlastitom rukom), na 30 do 90 minuta. Potraži liječničku pomoć, osobito kod ribe kamena i raža.

Uvijek prvo nazovi broj za hitne slučajeve (112, 000, 911). Ovo su opće upute za prvu pomoć, a ne liječnički savjet. Osnove prve pomoći

Ostani na sigurnom

  • Nikad ne diraj, ne hvataj i ne zadirkuj divlju životinju, čak ni malu, i čak ni ako izgleda kao da spava ili je mrtva.
  • Ostavi joj prostora. Ako je sretneš, ne paniči, polako se odmakni i pusti je da ode svojim putem.
  • Ako te ubodu njezine bodlje: ne paniči, miruj, nazovi broj za hitne slučajeve (112, 000, 911) ili brzo idi u bolnicu. Zapamti kako je izgledala, fotografija pomaže.

Ne želi ti ništa loše. Otrov koristi za lov hrane ili za obranu i mnogo bi se radije sakrilo. Više o sigurnosti

Gdje u svijetu?

AfrikaAzijaEuropaSjeverna AmerikaJužna AmerikaAustralija i OceanijaTihi oceanKalifornijski zaljev

Koliko je veliko?

Koliko je dugo?

Spotted ratfish dugo oko 97 cm (3,2 ft)Kućna mačka oko 50 cm (1,6 ft)Pas oko 1 m (3,3 ft)
dugo kao 2 kućnih mačaka od nosa do repadugo kao 5 banana poredanih u nizumoglo bi preplivati dužinu velikog bazena (50 m) za 12 sekundi

Koliko je Spotted ratfish velika životinja u usporedbi s TOBOM?

Samo matematika u tvom pregledniku. Ništa se ne sprema niti šalje nikamo.

Koliko je brzo?

vrijedi znati

Činjenice

1

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

2

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

3

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

4

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

5

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

6

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

Za stručnjake za otrove

Znanstveni naziv
Hydrolagus colliei
Skupina
Otrovne ribe
Obitelj
Chimaeridae2
Redoslijed
Chimaeriformes
Kontinenti
Tihi ocean, Kalifornijski zaljev, Oceani
Mladunci
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
Opasnost za ljude
2 / 5: Bolno3

Odakle su činjenice

  1. Spotted ratfish (Wikipedia (CC BY-SA 4.0))
  2. Hydrolagus colliei (iNaturalist): imena i klasifikacija.
  3. Venom Wiki: razina opasnosti, tipična veličina i procijenjena brzina naše su. Pogledaj kako ih izračunavamo: Kako ocjenjujemo opasnost.

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