Hämyraitatokko Sisällysluettelo Koko ja ulkonäkö | Alkuperä | Käyttäytyminen | Vesiolot ja ravinto | Lähteet | Aiheesta muualla | NavigointivalikkoInfobox OKNimi-testi OKIUCN-testi OK Valenciennea wardiiSaltwaterfishThe Fish Of Which Dreams (or Nightmares) Are Made: The Genus ValencienneaPetsolutionsMeriakvaarion perustamismanuaaliValencienna wardiipeilipalvelin

MeriakvaariokalatTokot


Elinvoimainentokkoihinkalariutta-akvaarioon





































Hämyraitatokko
Two Spot Goby.jpg
Uhanalaisuusluokitus

Elinvoimainen [1]



Elinvoimainen


Tieteellinen luokittelu
Domeeni:
Aitotumaiset Eucarya
Kunta:
Eläinkunta Animalia
Pääjakso:
Selkäjänteiset Chordata
Alajakso:
Selkärankaiset Vertebrata
Yläluokka:
Luukalat Osteichthyes
Luokka:
Viuhkaeväiset Actinopterygii
Alaluokka:
Neopterygii
Lahko:
Ahvenkalat Perciformes
Alalahko:
Gobioidei
Heimo:
Tokot Gobiidae
Suku:
Valenciennea
Laji:
wardii
Kaksiosainen nimi

Valenciennea wardii
(Playfair, 1867)



Infobox OKNimi-testi OKIUCN-testi OK

Hämyraitatokko (Valenciennea wardii) on tokkoihin kuuluva kala.




Sisällysluettelo





  • 1 Koko ja ulkonäkö


  • 2 Alkuperä


  • 3 Käyttäytyminen


  • 4 Vesiolot ja ravinto


  • 5 Lähteet


  • 6 Aiheesta muualla




Koko ja ulkonäkö |


Hämyraitatokko kasvaa noin 13 cm pitkäksi. Sen vartalossa on ruskeansävyisiä pystyraitoja, selkäevässä on tumma silmätäplä. Silmän alla kulkee neonsininen raita.[2]



Alkuperä |


Hämyraitatokkoja elää luonnossa Punaisella merellä, Intian valtamerellä, Thaimaan ympäristössä ja Japanin seudulla. Eri alueilla on kehittynyt erilaisia värimuunnoksia.[3]



Käyttäytyminen |


Hämyraitatokkoja pidetään meriakvaariossa jossa on korallihiekkapohja, jonka joukosta tokot kaivelevat ruokaa itselleen. Ne eivät näyki koralleja, joten ne käyvät myös riutta-akvaarioon. Joskus hiekan pöllyttäminen aiheuttaa ongelmia koralleille. Jotkut yksilöt ovat aggressiivisia lajitovereitaankohtaan[4]



Vesiolot ja ravinto |


Hämyraitatokot syövät hiekasta itse kaivamiensa ötököiden lisäksi jonkun verran lihaisaa pakasteruokaa. Ruokinta on joskus ongelmallista, ja kala voi nääntyä nälkään.[5]



Lähteet |



  1. ↑ Larson, H.: Valenciennea wardii IUCN Red List of Threatened Species. Version 2016.3. 2016. International Union for Conservation of Nature, IUCN, Iucnredlist.org. Viitattu 9.1.2017. (englanniksi)


  2. ↑ Saltwaterfish (myös kuva)


  3. ↑ Henry C. Schultz: The Fish Of Which Dreams (or Nightmares) Are Made: The Genus Valenciennea 2002. ReefCentral. Viitattu 31.7.2007. (englanniksi)


  4. ↑ Petsolutions


  5. ↑ Meriakvaarion perustamismanuaali



Aiheesta muualla |



  • Valencienna wardii (peilipalvelin) FishBase. Froese, R. & Pauly, D. (toim.). (englanniksi)

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