Fish, like mammals, can be affected by neoplastic proliferations. As yet, there are only a very small number of studies reporting on the occurrence of tumours in koi carp Cyprinus carpio koi and only sporadic reports on the nature of the tumours or on risk factors associated with their development. Between 2008 and 2012, koi with abdominal swelling were examined pathologically: neoplastic lesio...

Non-native freshwater fish species that have been introduced to the inland waters of Kenya are listed and the consequences of stocking such fish are reviewed. Original species composition and lake ecosystem function can be detrimentally affected but, also, the introduction of non-native species can result in significant economic benefit. In the context of impact on recipient fish communities an...

Oocyte and ovarian development, growth, and maturation have been described in many gonochoric fish: in the swordfish (Xiphias gladitus) by Arocha (2002), striped bass (Morone saxatilis) by Mylonas et al. (1997), carp (Cyprinus carpio) by Linhart et al. (1995), zebrafish (Brachydanio rerio) by Selman et al. (1993), pipefish (Syngnathus scovelli) by Begovac et al. (1988), red sea bream (Pagrus ma...

Mass mortality occurred in 2-year-old koi (fancy carp)Cyprinus carpio in Taiwan in 2002. Affected fish did not show any external signs except swollen gills. The consistent histological changes were observed in the gills; hyperplasia of epithelial cells, infiltration of eosinophilic granular cells and fusion of the secondary lamellae. Nega tively stained nucleocapsids were icosahedral and 112±1 ...

25 In order to efficiently manage non-indigenous species (NIS) predictive tools are needed to 26 prioritize locations where they are likely to become established and where their impacts will be 27 most severe. While predicting the impact of a NIS has generally proved challenging, forecasting 28 its abundance patterns across potential recipient locations should serve as a useful surrogate 29 met...

We examined how traditional farmers preserve the genetic diversity of a local common carp (Cyprinus carpio), which is locally referred to as "paddy field carp" (PF-carp), in a "globally important agricultural heritage system" (GIAHS), i.e., the 1,200-y-old rice-fish coculture system in Zhejiang Province, China. Our molecular and morphological analysis showed that the PF-carp has changed into a ...