Abstract :
[en] During the spawning period of the grayling, one male was sexually stimulated by a feeding barbel and consequently exhibited the behavioural pattern of 'approach', 'quivering' and 'dorsal fin clasping'.
Title :
FIELD OBSERVATIONS ON A MATING ATTEMPT OF A SPAWNING GRAYLING, THYMALLUS-THYMALLUS WITH A FEEDING BARBEL, BARBUS-BARBUS
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