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Invasive alien species in Switzerland - Schweizer ...

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An <strong>in</strong>ventory of <strong>alien</strong> <strong>species</strong> and their threat to biodiversity and economy <strong>in</strong> <strong>Switzerland</strong> FOEN 2006 62<br />

Tab. 2.7 > Alien fish <strong>species</strong> <strong>in</strong> <strong>Switzerland</strong>.<br />

Scientific name Family Orig<strong>in</strong> Year Pathway Impact Note<br />

Aristichthys nobilis Richardson Cypr<strong>in</strong>idae Ch<strong>in</strong>a ? Released for fish<strong>in</strong>g Changes of community and habitat? Appendix 3<br />

<strong>species</strong><br />

Aspius aspius (L.) Cypr<strong>in</strong>idae Central and 1994 Released for fish<strong>in</strong>g <strong>in</strong> Harmless Not <strong>in</strong> the<br />

eastern Europe Germany Appendixes<br />

Migration through new<br />

canal systems<br />

Carassius auratus (L.) Cypr<strong>in</strong>idae Central and ? Released and escaped; Competition with native fish Appendix 2<br />

eastern Asia imported as ornamental <strong>species</strong>? <strong>species</strong><br />

fish Community changes by <strong>in</strong>creas<strong>in</strong>g<br />

water turbidity?<br />

Carassius carassius (L.) Cypr<strong>in</strong>idae Europe ? Released for fish<strong>in</strong>g Competition with native fish Appendix 2<br />

Bait fish <strong>species</strong>? <strong>species</strong><br />

Community changes by <strong>in</strong>creas<strong>in</strong>g<br />

water turbidity?<br />

Carassius gibelio (Bloch) Cypr<strong>in</strong>idae Probably Asia ? Released for fish<strong>in</strong>g Competition with native fish Appendix 2<br />

<strong>species</strong>? <strong>species</strong><br />

Community changes by <strong>in</strong>creas<strong>in</strong>g<br />

water turbidity?<br />

Ctenopharyngodon idella (Cuvier Cypr<strong>in</strong>idae Ch<strong>in</strong>a ? Aquaculture Can change the ecosystem by Appendix 3<br />

& Valenciensis) Released to control remov<strong>in</strong>g aquatic plants <strong>species</strong><br />

aquatic vegetation<br />

Hypophthalmichthys molitrix Cypr<strong>in</strong>idae Ch<strong>in</strong>a 1970 Released for control of Community and food-web changes Appendix 3<br />

(Valenciensis) phytoplankton by feed<strong>in</strong>g on phytoplankton <strong>species</strong><br />

Pseudorasbora parva (Temm<strong>in</strong>ck Cypr<strong>in</strong>idae East Asia 1990 Accidental <strong>in</strong>troductions Community and food-web changes Appendix 3<br />

& Schlegel) with other cypr<strong>in</strong>id imports by selective feed<strong>in</strong>g on zooplankton <strong>species</strong><br />

Chances <strong>in</strong> water chemistry<br />

No commercial value<br />

Ameiurus melas and A. nebulosus Ictaluridae Central and ? Aquaculture Predator Appendix 3<br />

(Le Sueur) eastern North Aquarium releases Competition with native fish <strong>species</strong> <strong>species</strong><br />

America Little commercial value<br />

Lepomis gibbosus (L.) Centrarchidae Eastern North ? Ornamental reasons Predator of small <strong>in</strong>vertebrates and Appendix 3<br />

America Released for fish<strong>in</strong>g vertebrates <strong>species</strong><br />

Micropterus salmoides (Lacé- Centrarchidae Central and ? Released for fish<strong>in</strong>g Decl<strong>in</strong>e of native fish <strong>species</strong> Appendix 3<br />

pède) eastern North <strong>species</strong><br />

America<br />

Sander lucioperca (L.) Percidae Central and ? Released for fish<strong>in</strong>g Ferocious predator Appendix 2<br />

eastern Europe <strong>species</strong><br />

Oncorhynchus mykiss Walbaum Salmonidae North America 1887 Released for fish<strong>in</strong>g Predator of native fish and am- Appendix 2<br />

Stock from Aquaculture phibians <strong>species</strong><br />

Germany Competition with native salmonids<br />

Salvel<strong>in</strong>us font<strong>in</strong>alis (Mitchill) Salmonidae Eastern parts of 1883 Released for fish<strong>in</strong>g Competition with native salmonids Appendix 2<br />

North America Aquaculture <strong>species</strong><br />

Stock from<br />

Germany<br />

Salvel<strong>in</strong>us namaycush (Walbaum) Salmonidae North America 1888 Released for fish<strong>in</strong>g Predator of native fish Appendix 2<br />

Competition with native salmonids <strong>species</strong>

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