Mosquitofish ( " Gambusia affinis " ) and Common carp ( " Cyprinus carpio " ) are nonnative fishes found predominately in the lower section of Pinole Creek, below Interstate 80.
12.
10 species of fish were identified in a 1993 sampling, dominated by Killifish, Topsmelt, Arrow goby ( " Clevelandia ios " ), and Western mosquitofish ( " Gambusia affinis " ) *.
13.
The species was threatened by reduced spring flows and pollution, including sprayed herbicide along the river and introduced fish ( " Gambusia affinis " ) and plants ( " Colocasia esculenta " ).
14.
They are susceptible to stress from loss and degradation of habitat, and especially in the Santa Monica Mountains from predation of eggs and larvae by introduced mosquitofish ( Gambusia affinis ) and crayfish ( Procambarus clarkia ).
15.
The following fish species are present in the park : " Astyanax mexicanus, Campostoma anomalum, Cichlasoma cyanoguttatum, Cyprinella lutrensis, Etheostoma grahami, Gambusia affinis, Macrhybopsis aestivalis, Notropis amabilis, Notropis braytoni, Notropis stramineus, Poecilia mexicana, Puntius conchonius ", and " Xiphophorus couchianus ".
16.
Sometimes one species can have both beneficial and detrimental effects, such as the Mosquito fish ( " Gambusia affinis " ), which has been widely introduced because of its suppression of larval mosquitoes, although it also has negative impacts on native species of insects, fish and amphibians ( Colautti and MacIsaac 2004 ).
17.
In fact, there are large interspecies differences in toxicity of pesticides to different rotifer species, as demonstrated by " Effects of an Insect Growth Regulator on Plankton and Gambusia Affinis ", Aquatic Toxicology, 4 ( 1983 ), 247-269 . Strictly speaking, the direct conclusions of the Rico-Martinez paper cannot be used to show toxicity to any species not tested, even other rotifer species.
