The reproductive periodicity and behaviour of Ophioblennius atlanticus (Pisces: Blenniidae) at Barbados

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Abstract
The redlip blenny, O. atlanticus, spawns chiefly within the first 3 h of daylight in the week centered around full moon, probably year-round. A male prepares and guards a nest crevice in his territory; females leave their territories to seek spawning males. A behavioral sequence determines the selection of a female for spawning. Polygyny occurs and possibly polyandry. Male feeding is reduced during spawning period. Spawning females usually are absent from their territories for less than 60 min, but blennies can expel transgressors after an absence as long as 660 min, i.e., about 1 daylight period.

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