| 词条 | Acanthicus hystrix |
| 释义 |
| image = Acanthicus hystrix.jpg | image_caption = From the Xingu River (Altamira, Pará, Brazil) | genus = Acanthicus | species = hystrix | authority = Agassiz in Spix & Agassiz, 1829[1] | synonyms = *Rinelepis acanthicus Valenciennes, 1840 }}Acanthicus hystrix, the lyre-tail pleco,[1] is a species of armored catfish native to the Amazon, Tocantins–Araguaia and Orinoco basins.[2] It is typically found at various depths on a rock or rock–gravel bottom in the main channel of rivers in places with moderate to strong current,[2] although it also occurs in slow currents.[1] The species is occasionally seen in the aquarium trade, but its adult size and territorially aggressive behavior means that a very large tank is required.[1] AppearanceIt grows to {{convert|62.8|cm|ft|abbr=on}} in standard length,[2] but may possibly reach {{convert|100|cm|ft|abbr=on}}.[1] Its color ranges from medium-brown to near-black (especially those from the Madeira, Branco and Xingu rivers are dark), and the underparts often have a vermiculated pattern.[2] Some of the variants are commonly considered as separate, undescribed species in the aquarium trade (e.g., L193 from the Orinoco basin and L407 from the Branco basin; in the L-number system), but there is extensive overlap in the morphometrics of the different populations.[2] Unlike the polka dot lyre-tail pleco (A. adonis), A. hystrix never has white spots.[2] Adults males are especially spiny with extensive odontodes on the cheeks and opercle.[2] References1. ^1 2 3 {{cite web| title=Acanthicus hystrix | url=http://www.seriouslyfish.com/species/acanthicus-hystrix/ | publisher=SeriouslyFish | accessdate=31 October 2017}} {{Taxonbar|from=Q3752833}}{{Loricariidae-stub}}2. ^1 2 3 4 5 6 7 Chamon, C.C. (2016): Redescription of Acanthicus hystrix Agassiz, 1829 (Siluriformes: Loricariidae), with comments on the systematics and distribution of the genus. Zootaxa, 4088 (3): 395–408. 6 : Ancistrini|Catfish of South America|Fauna of the Amazon|Freshwater fish of Brazil|Freshwater fish of Peru|Fish described in 1829 |
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