Do non‐native ornamental fishes pose a similar level of invasion risk in neighbouring regions of similar current and future climate? Implications for conservation and management

Abstract

1. Global trade in non-native ornamental species coupled with high connectivity among countries is well known to result in worldwide biological invasions, which pose challenges for the conservation and management of biodiversity.2. There are few studies aimed at implementing management strategies that have examined differences in the potential invasiveness of non-native species between neighbouring political regions within the same ecoregion.3. To compare the potential risk of invasiveness of non-native ornamental fishes with high commercial value in the river basins of two neighbouring regions of East and Southeast Asia, 32 extant and horizon species were screened with the AQUATIC SPECIES INVASIVENESS SCREENING KIT (AS-ISK) for the lower Pearl River basin (South China) and the Chao Phraya River basin (Thailand). Both regional (i.e. basin level) and combined risk-ranking thresholds were determined by receiver operating characteristic curve analysis. 4. Of the 32 species screened, 14 were categorized as posing a high risk and seven were categorized as posing a medium risk of being invasive in both regions, under

Risk of invasiveness of non-native fishes can dramatically increase in a changing climate: The case of a tropical caldera lake of conservation value (Lake Taal, Philippines)

“…This would provide accessible and updated information to national and regional policy-makers and stakeholders to help implement import, export, control or eradication measures for appropriate management, and to amend and reinforce non-native species legislation and regulations (Roy et al 2018). Moreover, given that these non-native ornamental fishes pose comparable levels of risk within the same biogeographical region, it may also serve as a foundation for developing shared regulations to control the international trade of various nonnative fish species among south-east Asian nations, particularly regarding highly marketable ornamental fishes (Chan et al 2019, Wei et al 2021).…”

Türkiye Tatlısularında Egzotik Yeşil Kılıçkuyruk(Xiphophorus hellerii)’nin İlk ve Lepistes (Poecilia reticulata)’nın İlave Kaydı

“…Both X. helleri and P. reticulata have established non-native populations in the wild and assumed to pose a high risk of invasiveness in Greece [30]. Non-native ornamental fish species could cause similar threats to biodiversity in neighbouring regions [47]. Therefore, Wei et al [47] suggested that collaboration between neighbouring countries could be useful in order to develop management and regulation strategies for the conservation of native species.…”

“…Non-native ornamental fish species could cause similar threats to biodiversity in neighbouring regions [47]. Therefore, Wei et al [47] suggested that collaboration between neighbouring countries could be useful in order to develop management and regulation strategies for the conservation of native species.…”

Introduction of non‐native fish for aquaculture in China: A systematic review

“…Ornamental fish culture is a major industry that caters to millions of aquarium enthusiasts all over the world and is also an important component of NAS introduction. 11,12 The global aquarium industry is a major source of biological invasions, especially in terms of the number of novel species and the number of potential sites for species release. 13,14 Historically, the earliest ornamental fish artificially selected and used in small-scale aquaculture was crucian carp Carassius auratus, also known as goldfish, in ancient China.…”

“…Ornamental fish culture is a major industry that caters to millions of aquarium enthusiasts all over the world and is also an important component of NAS introduction 11,12 . The global aquarium industry is a major source of biological invasions, especially in terms of the number of novel species and the number of potential sites for species release 13,14 .…”