Krottimonni

Krottimonni
Uhanalaisuusluokitus

Vaarantunut [1]

Vaarantunut

Tieteellinen luokittelu
Domeeni: Aitotumaiset Eucarya
Kunta: Eläinkunta Animalia
Pääjakso: Selkäjänteiset Chordata
Alajakso: Selkärankaiset Vertebrata
Yläluokka: Luukalat Osteichthyes
Luokka: Viuhkaeväiset Actinopterygii
Alaluokka: Neopterygii
Lahko: Monnikalat Siluriformes
Heimo: Mehiläismonnit Pseudopimelodidae
Suku: Lophiosilurus
Laji: alexandri
Kaksiosainen nimi

Lophiosilurus alexandri
Steindachner, 1876

Katso myös

  Krottimonni Wikispeciesissä
  Krottimonni Commonsissa

Krottimonni (Lophiosilurus alexandri) on mehiläismonneihin kuuluva kalalaji. Lajia tavataan uhanalaisena makeista vesistä Etelä-Amerikasta.

Koko ja ulkonäkö

Krottimonni voi kasvaa suurimmillaan noin 72 cm pitkäksi, mutta jää yleensä alle 50 cm pitkäksi. Lajin ruumis on suuri- ja litteäpäinen ja kala voi painaa 5–8 kg. Silmät sijaitsevat selässä ja suu on hyvin kookas. Krottimonnilla on rasvaevä. Laji on väriltään ruskea tai harmahtava ja ihossa on useita nystyjä.[2][3]

Levinneisyys ja elintavat

Krottimonnia tavataan Brasiliasta São Francisco ja Docejoista. Se elää jokien pohjalla, on yöaktiivinen ja sen ravintoa ovat muut kalat. Lajin lisävntymiskausi on lokakuusta helmikuulle ja se munii pohjaan. Krottimonnikoiras vartioi munia.[1][3][4]

Krottimonni on erittäin hyvä ruokakala. Laji luokitellaan vaarantuneeksi kannan taannuttua ylikalastuksen ja elinympäristön muutosten vuoksi. Krottimonnin viljelyä on tutkittu.[1][4]

Lähteet

  1. a b c Instituto Chico Mendes de Conservação da Biodiversidade (ICMBio): Lophiosilurus alexandri IUCN Red List of Threatened Species. Version 2021-3. 2021. International Union for Conservation of Nature, IUCN, Iucnredlist.org. Viitattu 16.1.2022. (englanniksi)
  2. Lophiosilurus alexandri (peilipalvelin) FishBase. Froese, R. & Pauly, D. (toim.). Viitattu 16.1.2022. (englanniksi)
  3. a b Fernando Massayuki Assega, José Luís Olivan Birindelli, Andréa Bialetzki, & Oscar Akio Shibatta: External Morphology of Lophiosilurus alexandri Steindachner, 1876 during Early Stages of Development, and Its Implications for the Evolution of Pseudopimelodidae (Siluriformes). PLOS ONE, 2016. Artikkelin verkkoversio. Viitattu 16.1.2022. (englanniksi)
  4. a b Deliane Cristina Costa, Walissonde Souza e Silva, Reinaldo Melillo Filho, Kleber Campos Miranda Filho, José Claudio Epaminondas dos Santos & Ronald Kennedy Luz: Capture, adaptation and artificial control of reproduction of Lophiosilurus alexandri: A carnivorous freshwater species. Animal Reproduction Science, 2015, 159. vsk, s. 148-154. Artikkelin verkkoversio. Viitattu 16.1.2022. (englanniksi)

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