Crucian carp
Crucian carp (-shan k?rp`)
[Compare Swedish karussa, German karausche, French carousse, -assin, corassin, Late Latin coracinus, Greek {not transcribed} a sort of fish.]
(Zoology) A kind of European carp (Carasius vulgaris), inferior to the common carp; -- called also German carp.
The gibel or Prussian carp is now generally considered a variety of the crucian carp, or perhaps a hybrid between it and the common carp.