What question did this study set out to answer?

To observe and document the reproductive behaviours of the Gulf Damsel beyond its typical range.

May 10, 2026Journal of Fish Biology0 citations

Tropicalisation of a damselfish (Gulf Damsel, Pristotis obtusirostris Günther 1862) in temperate Australian waters, with the first detailed observations of mass spawning

DHD. HarastiNew South Wales Department of Primary Industries TDT. R. DavisNew South Wales Department of Primary Industries

Key Points

To observe and document the reproductive behaviours of the Gulf Damsel beyond its typical range.
Detailed observations of nesting behaviours during spawning events
Recorded male colour changes and nest tending activities
Counted the number of nests per site
Successful mass spawning observed in temperate waters
Males exhibited reproductive behaviours such as colour darkening and egg aeration
Evidence of accelerating tropicalisation in temperate reef fish communities

Abstract

and dozens of nests per site. During nesting, males displayed reproductive behaviours including colour darkening, nest tending and egg aeration. These findings demonstrate successful reproduction well beyond the species' typical range and highlight accelerating tropicalisation within temperate reef fish communities.

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