O. G. Dely szerk.: Vertebrata Hungarica 3/1-2. (Budapest, 1961)
Berinkey, L.: Ichtyological notes 2. On the biology of breeding of Carassius auratus gibelio (Bloch) 27-34. o.
During the gathering of the fishes of the fish-pond /fed by the waters of the Sárviz channel/ in the state farm of Nagyhörcsökpuszta on 23 October 1958, I captured two hybrid specimens of Carassius caraeslu s L. and Caraeelus auratus gibeli o /BLOCH/. No hybrid of the two species were as yet known. That the parent-species of the hybrids examined by me did really belong to the two species mentioned above and that the regular fertilization of the egg /the unison of the sperm and the ovulum/ did actually occur are verified by the fact that the characteristics! features of both parent species were manifest on the hybrids* The parent species differ from each other in several morphological and osteological characters, the most conspicuous ones being the following: the body of the typical form of Carassius carasslu a is very high, about half the length of the body. The back is highly arched. The mouth is terminal, but the oral cleft, in a lateral view, turns obliquely upward. The dorsal fin is long and high, its posterior margin strongly convex ; the last undivided ray of the dorsal and anal fins constitutes a strong spine, densely and minutely teethed on its posterior side /number of teeth about 30/. There are regularly 6 divided rays in the anal fin.Some 32-35 scales lie along the lateral line. A vivid dark spot ornaments the caudal peduncle of juvenile specimens.becoming gradually evanescent on adult animals. The number of spines on the first branchial arch is 23-35, usually 26-31; the spines are short.The number of vertebrae vary between 31-34. The body of Carassius auratus gibeli o is lower, its dorsal outline more weakly arched.The mouth is also terminal but the oral cleft, when viewed laterally, is not oblique but straight. The dorsal fin is long and high,but its margin is not convex but straightly truncate. The last undivided ray of the dorsal and anal fins constitute a strong spine each, with rarely spaced, large teeth on its posterior side, the number of teeth may be 10-15. The scales are large, with
