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Àwòrán kátúùnù Spotted ratfish
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Spotted ratfish

Hydrolagus colliei
Nípa orúkọ náà: 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
Ó kàn ń dunniMá ṣe fọwọ́ kàn ánÓ ń dunni, ṣùgbọ́n kò ní ṣe ọ́ léṣe gidigidi.
Ẹja olóró Ẹ̀gún olóróOúnjẹ rẹ̀: Ẹran
Ewu fún ènìyàn: Ó ń dunniÓ lè dunni gan-an, ṣùgbọ́n kì í fẹ́rẹ̀ẹ́ le rárá.

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

Ó ń gbé ní
Northeastern Pacific Ocean, from Alaska to Baja California, plus an isolated population in the Gulf of California1
Òkun Pàsífíìkì, Ìyawọlẹ̀ Òkun Kalifọ́níà
Ilé
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
Gígùn
14 cm sí 97 cm (5.5 in sí 3.2 ft)1
Ìyára gíga jùlọ
nǹkan bí 15 km/h (9.3 mph)
Lílúwẹ̀ẹ́, àfojúbù
Kí ni ó máa ń jẹ?
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
Ní tòótọ́!Fọ́tò Spotted ratfish
Spotted ratfish. Fọ́tò: Brian Gratwicke. CC BY 4.0, iNaturalist.

Bí o ṣe lè dá a mọ̀

  • 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

Agbára oró

Ẹ̀gún olóró

Ẹ̀gún mímú ló ń gbé oró náà. Títẹ̀ ẹ́ mọ́lẹ̀ tàbí dídì í mú máa ń dunni.

Kí ni oró rẹ̀ máa ń ṣe?

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

Báwo ló ṣe léwu tó fún ènìyàn?

Ewu fún ènìyàn: Ó ń dunniÓ lè dunni gan-an, ṣùgbọ́n kì í fẹ́rẹ̀ẹ́ le rárá.

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

Kí ni ó máa ń ṣe nígbà tí ẹ̀rù bá bà á?

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

Bí ẹ̀gún rẹ̀ bá gún ọ

  • Fi ọgbẹ́ náà sínú omi gbígbóná, tó gbóná tó bí ẹni náà ṣe lè fara dà á láìjóná (fi ọwọ́ ara rẹ dán an wò), fún ìṣẹ́jú 30 sí 90. Wá ìrànlọ́wọ́ ìṣègùn, pàápàá fún ẹja òkúta àti stingray.

Máa kọ́kọ́ pe nọ́ńbà pàjáwìrì rẹ nígbà gbogbo (112, 000, 911). Èyí jẹ́ ìtọ́sọ́nà ìtọ́jú àkọ́kọ́ gbogbogbò, kì í ṣe ìmọ̀ràn ìṣègùn. Ìpìlẹ̀ ìtọ́jú àkọ́kọ́

Wà láìléwu

  • Má ṣe fọwọ́ kan, mú tàbí yọ ẹranko igbó lẹ́nu láéláé, kódà bí ó bá kéré, kódà bí ó bá dà bí ẹni pé ó ń sùn tàbí ó ti kú.
  • Fún un ní àyè. Bí o bá pàdé ọ̀kan, farabalẹ̀, sẹ́yìn díẹ̀díẹ̀ kí o sì jẹ́ kí ó máa bá ọ̀nà rẹ̀ lọ.
  • Bí ẹ̀gún rẹ̀ bá gún ọ: farabalẹ̀, má ṣe mira, pe nọ́ńbà pàjáwìrì rẹ (112, 000, 911) tàbí lọ sí ilé ìwòsàn kíákíá. Rántí bí ó ṣe rí, fọ́tò máa ń ṣèrànwọ́.

Kò wá ọ kiri láti ṣe ọ́ léṣe. Ó ń lo oró rẹ̀ láti mú oúnjẹ tàbí láti dáàbò bo ara rẹ̀, ó sì fẹ́ràn láti farapamọ́ jù. Sí i nípa wíwà láìléwu

Níbo ní ayé?

ÁfíríkàÉṣíàYúróòpùÀríwá Amẹ́ríkàGúúsù Amẹ́ríkàỌsirélíà àti ÒṣéáníàÒkun PàsífíìkìÌyawọlẹ̀ Òkun Kalifọ́níà

Báwo ló ṣe tóbi tó?

Báwo ló ṣe gùn tó?

Spotted ratfish gígùn rẹ̀ tó nǹkan bí 97 cm (3.2 ft)Ológbò ilé nǹkan bí 50 cm (1.6 ft)Ajá kan nǹkan bí 1 m (3.3 ft)
ó gùn tó ológbò ilé 2 láti imú dé ìrùó gùn tó ọ̀gẹ̀dẹ̀ 5 tí a tò tẹ̀léralè lúwẹ̀ẹ́ gígùn adágún ìwẹ̀ ńlá (50 m) ní ìṣẹ́jú-àáyá 12

Báwo ni Spotted ratfish ṣe tóbi tó tí a bá fi wé ÌWỌ?

Ìṣirò nìkan nínú bráwúsà rẹ. A kò fi ohunkóhun pamọ́, a kò sì fi ránṣẹ́ sí ibikíbi.

Báwo ló ṣe yára tó?

ó yẹ ní mímọ̀

Òtítọ́

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

Fún àwọn amòye oró

Orúkọ sáyẹ́ǹsì
Hydrolagus colliei
Ẹgbẹ́
Ẹja olóró
Ìdílé
Chimaeridae2
Ètò
Chimaeriformes
Àwọn kọ́ńtínẹ́ńtì
Òkun Pàsífíìkì, Ìyawọlẹ̀ Òkun Kalifọ́níà, Àwọn òkun ńlá
Àwọn ọmọ
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
Ewu fún ènìyàn
2 / 5: Ó ń dunni3

Ibi tí àwọn òtítọ́ ti wá

  1. Spotted ratfish (Wikipedia (CC BY-SA 4.0))
  2. Hydrolagus colliei (iNaturalist): orúkọ àti ìpínsísọ̀rí.
  3. Venom Wiki: ìpele ewu, ìtóbi déédé àti àfojúbù ìyára jẹ́ tiwa. Wo bí a ṣe ń ṣírò wọn: Bí a ṣe ń díwọ̀n ewu.

Gbogbo òtítọ́ ojú-ìwé yìí ní nọ́ńbà tó tọ́ka sí orísun rẹ̀. Bí a bá ṣe àṣìṣe, má bínú, olólùfẹ́ ẹranko ni wá, kì í ṣe ìwé ìròyìn sáyẹ́ǹsì. Sọ fún wa ní [email protected] a ó sì tún un ṣe.

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