Country · Europe
Czech Republic
Every profile recorded in Czech Republic, native or introduced.
- Species
- 2
- Families
- 2
- Genera
- 2
- Found only here
- 0
- Photographed
- 1 of 2
Where it isEurope
Shares its fishes withspecies recorded in both
Xiphophorus helleriiGreen Swordtail
Poeciliidae · Heckel, 1848
Wild swordtails are a fairly basic green colur. However the vast majority of swordtails available in the hobby today are hybrids of X.helleri with X.maculatus or X.variatus. There are a huge number of selectively-bred varieties available, including wagtail, lyretail, tuxedo, albino, neon, red, green and hi-fin. Swordtails may undergo what appears to be a change in sex. In young fish this may simply be late development. However some adult females develop male characteristics which is thought ...
Ctenopharyngodon idellaGrass Carp
Cyprinidae · Valenciennes, 1844
Despite being a wholly unsuitable aquarium subject, C. idella is often traded as such, with an albino form having been developed specifically for the ornamental market. Individuals which have outgrown their aquarium or pond should never be released into natural waters, either, since this species has proven capable of causing serious environmental damage under a wide range of climatic conditions.