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Summary
This paper deals with uncommon abnormalities found in the following fishes.
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Duplication of dorsal fin in a hybrid between Paracheilognathus rhombeus ♀ and Acheilognathus limbatus ♂ representing a case of duplicitas media asymmetrica.
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Metastasis of the pelvic region in a hybrid between P. rhombeus ♀ and Rhodeus ocellatus ♂.
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Severe lordosis and scoliosis in a hybrid between P. rhombeus ♀ and R. ocellatus ♂.
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Congenital rudimentation of dorsal fin in a hybrid between P. rhombeus ♀ and R. ocellatus ♂.
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Absence of pelvic fin in a hybrid between P. rhombeus ♀ and R. ocellatus ♂.
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Absence of pelvic girdle and fins in an adult specimen of R. ocellatus.
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Incomplete triplication of caudal fin in a hybrid between P. rhombeus ♀ and R. ocellatus ♂.