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Morphology

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Dorsal soft rays (total): 10 - 14; Analsoft rays: 3 - 5
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Christine Marie V. Casal
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Trophic Strategy

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Typically from floodplain lakes, swamps and borrow pits, where oxygen levels are very low and they must rely on air breathing for long periods of time (Ref. 58517).
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Biology

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Typically from floodplain lakes, swamps and borrow pits, in poorly-oxygenated waters and must rely on air breathing for long periods of time. Has a specialized (enlarged) stomach which appear to function as accessory respiratory organs (Ref. 58517).
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Armi G. Torres
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Importance

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aquarium: commercial
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分布

provided by The Fish Database of Taiwan
原產於南美洲馬德拉河流域。現因屬觀賞魚之故,被引入其自然分區區以外的國家,包括臺灣。
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臺灣魚類資料庫
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利用

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屬於觀賞魚。
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描述

provided by The Fish Database of Taiwan
背鰭 I+10-14;臀鰭I+3-5。與豹紋翼甲鯰(/Pterygoplichthys pardalis/)相類似,差異在於本種魚腹面的花紋呈蠕狀而非點狀,但同時在台灣野外水域亦常看到腹面花紋是介於這兩種魚體色的中間型,可能是這兩種的雜交種,因此有關於這兩種魚間的分類關係,仍須進一步研究。/Liposarcus disjunctivus/為本種之同種異名。
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棲地

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廣泛棲息於河川中下游流速緩慢的水域、溝渠、水池或湖泊,常群體聚集。屬於底棲性碎屑雜食性魚,利用特化的吸盤狀口器刮食附著性的微小藻類生活。對於水質的污染容忍度很高,在低溶氧的中度污染水域仍可見其蹤跡。
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Pterygoplichthys disjunctivus

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Pterygoplichthys disjunctivus,[1] commonly known as the vermiculated sailfin catfish,[2] is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Madeira River basin in Bolivia and Brazil, although it has subsequently been introduced to various countries.[3]

A specimen of Pterygoplichthys disjunctivus being hunted by a giant otter.

Pterygoplichthys disjunctivus is typically found in floodplain lakes, swamps, and borrow pits in water with a low concentration of oxygen. As such, it is a facultative air-breather that appears to use its specialized stomach as an accessory respiratory organ, and it is known to typically rely on breathing air for long periods of time. The species is very large for a loricariid, reaching 70 cm (27.6 inches) in total length.[3] It is an introduced species in India, Indonesia, Japan, Mexico, the Philippines, Puerto Rico, Singapore, Taiwan, Turkey, and the United States, and it is likely responsible for ecological and environmental damage.[4]

References

  1. ^ "ITIS – Report: Pterygoplichthys disjunctivus". www.itis.gov. Retrieved 14 December 2022.
  2. ^ "Pterygoplichthys disjunctivus • Loricariidae • Cat-eLog". www.planetcatfish.com. Retrieved 14 December 2022.
  3. ^ a b Froese, Rainer; Pauly, Daniel, eds. (2022). "Pterygoplichthys disjunctivus". FishBase.{{cite web}}: CS1 maint: url-status (link)
  4. ^ "GISD". www.iucngisd.org. Retrieved 14 December 2022.
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Pterygoplichthys disjunctivus: Brief Summary

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Pterygoplichthys disjunctivus, commonly known as the vermiculated sailfin catfish, is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Madeira River basin in Bolivia and Brazil, although it has subsequently been introduced to various countries.

A specimen of Pterygoplichthys disjunctivus being hunted by a giant otter.

Pterygoplichthys disjunctivus is typically found in floodplain lakes, swamps, and borrow pits in water with a low concentration of oxygen. As such, it is a facultative air-breather that appears to use its specialized stomach as an accessory respiratory organ, and it is known to typically rely on breathing air for long periods of time. The species is very large for a loricariid, reaching 70 cm (27.6 inches) in total length. It is an introduced species in India, Indonesia, Japan, Mexico, the Philippines, Puerto Rico, Singapore, Taiwan, Turkey, and the United States, and it is likely responsible for ecological and environmental damage.

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