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.
28-31 oblique rows of scales along the lateral line. There is no dark spot on the caudal peduncle of Juvenile specimens. The branchial spines are long, 39-50 on the first branchial arch. There may be 29-31 vertebrae .usually 29-30. The two species differs also in several osteological characters, but I will not discuss the differences now. Examining the hybrid specimens from the point of view of finding out in which of their characters they resemble one or the other of the parent species, I was able to establish the followings: they agree with Carassius c arasslus in: 1. the situation of the oral cleft, 2. the presence of the conspicuous black spot on the caudal peduncle, 3. the number of the divided raye of the anal fin, 4. the numbers of the branchial spines and 5. the vertebrae, as well as 6. in the shape of the vomer, the frontale, and the hyomandibulare. They conform to the characteristics of Carassius auratus gibell o in: l.the shape of the dorsal fin, 2. the number of scales along the lateral line, 3. the length of the branchial spines, and 4. the shape of the besloccipitale the urohyale, and the articulare. ïinally, they occupy an intermediate position in: 1. the number of the teeth on the rays of the dorsal and anal fins, 2. the shape and structure of the operculum, and 3. the shape of the pharyngeal arches /ossa pharyngea inferiors/ /Pig. 1-9./. On the basis of the mutual presence of the characteristlcal features as discussed above of the parent species on the hybrids, it can be shown indubitably that a regular fertilization took place.In my opinion,regular fertilization may occur also in the case of Carassius auratus gibeli o, and the hybrids of this species may be as frequent as those of the other species of the family Cyprlnida e .
