Negative effects of undesirable fish on common carp production and overall structure and functioning of fishpond ecosystems

First record of highly invasive Chinese sleeperPerccottus gleniiDybowski, 1877 (Perciformes: Odontobutidae) in the Elbe River Basin, Czechia

“…Pond aquaculture has a tradition in the Czech Republic, with the most important fish species being the common carp ( Cyprinus carpio ); however, this could provide fertile ground for the Chinese sleeper invasion of Czech waters. Pond aquaculture also produces coarse fish species that are partially flushed from the pond during draining and harvesting, and among them are often small fish species such as topmouth gudgeon ( Pseudorasbora parva ) (Gozlan et al ., 2010; Kajgrová et al ., 2022; Musil et al ., 2014). In addition to the release of Chinese sleeper from ponds into streams (Nehring & Steinhof, 2015), populations established in streams may be fed by this influx of small prey (Bojarski et al ., 2022).…”

Fisheries Volume 48 Number 5 May 2023

“…Ecosystem service provisions are also dictated by the law; these may be summarized as biodiversity conservation, accumulation and retention of water, protection against fl oods, and biological water treatment. The ponds must partially serve as refuge and nesting sites for waterfowl, as water sources for wild animals, and as breeding sites for amphibians and other, noncommercial fi sh species (Kajgrová et al 2022 ). In addition, pond owners are also obliged to clean the ponds of sediment every few years to prevent the pond from being fi lled with it.…”

“…Management is focusing on decreased harvest of native fi shes and reduced stocking of nonnative fi shes, with the goal of making recreational fi sheries more sustainable. Similarly, fi sh pond management has started turning fi sh ponds into diverse ecosystems that support noncommercial fi sh species as well as waterbirds, amphibians, and invertebrates (Kajgrová et al 2022 ). Fish farms have been adopting new technologies to ensure the welfare of produced fi sh and to support their environmental conditions (Adámek et al 2019 ).…”

Fisheries and Aquaculture in the Czech Republic: History, Current Status, Management, and Regulations

“…Ecosystem service provisions are also dictated by the law; these may be summarized as biodiversity conservation, accumulation and retention of water, protection against floods, and biological water treatment. The ponds must partially serve as refuge and nesting sites for waterfowl, as water sources for wild animals, and as breeding sites for amphibians and other, noncommercial fish species (Kajgrová et al 2022). In addition, pond owners are also obliged to clean the ponds of sediment every few years to prevent the pond from being filled with it.…”

“…Management is focusing on decreased harvest of native fishes and reduced stocking of nonnative fishes, with the goal of making recreational fisheries more sustainable. Similarly, fish pond management has started turning fish ponds into diverse ecosystems that support noncommercial fish species as well as waterbirds, amphibians, and invertebrates (Kajgrová et al 2022). Fish farms have been adopting new technologies to ensure the welfare of produced fish and to support their environmental conditions (Adámek et al 2019).…”