Catches and distribution of two flathead species
Platycephalus sp. I (magochi) and
Platy-cephalus sp. II (yoshinogochi), in the southern Yatsushiro Sea, Japan, were analysed on the basis of catch statistics at Izumi fish market from 1983 to 1988. Annual catches amounted from 8.7 to 14.3 metric tons for
Platycephalus sp. I and 0.2 to 2.9 metric tons for
Platycephalus sp. II. The majority of the catches was brought in by gill net fishery and the minority by small sailing trawl and sea bream surrounding seine fisheries. Monthly CPUE values for gill net fishery were high from May to August (peak in June) for
Platycephalus sp. I and March to May (peak in April) for
Platycephalus sp. II. Catch information obtained by questionnaire during the fishing season from May to August in 1988 showed that
Platycephalus sp. I is mainly distributed at the inshore regions at less than 30m depth and
Platycephalus sp. II at the offshore regions between 30 and 40m depths.
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