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Territory Boundaries, Courtship, and Social Behavior in the Garibaldi, Hypsypops rubicunda (Pomacentridae)
Thomas A. Clarke
Vol. 1971, No. 2 (Jun. 1, 1971), pp. 295-299
Stable URL: http://www.jstor.org/stable/1442830
Page Count: 5
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Adult garibaldi defend bottom territories throughout the year. Boundaries are usually respected by other garibaldi, and intraspecific aggression is uncommon. Jaw-locking between adjacent neighbors was observed. This behavior is probably a ritualized form of boundary fighting observed in other territorial pomacentrids. Garibaldi occasionally aggregate and mix above the bottom without obvious agonism, ignoring territory boundaries below. During aggregation, pairs of garibaldi perform activities similar to those observed during courtship. It is proposed that aggregation above the bottom is a form of preliminary, communal courtship whereby neighboring fish can mix without evoking territorial aggression.