Skip to main content

Free Content Clustering: Non-Agonistic Group Contact in Territorial Reef Fishes, with Special Reference to the Sea of Cortez Damselfish, Eupomacentrus Rectifraenum

Download Article:
(PDF 1071.591796875 kb)


Sea of Cortez damselfish, Eupomacentrus rectifraenum, periodically depart from their usual behavior of strongly defended, individual territories to form short-term aggregates of from 2 to 12 interacting adults. Such “clusters” occur most frequently just after dawn and can occur anywhere in a group of damselfish territories. During such clusters, individual fish assume an apparent appeasement coloration and mill about, chasing one another briefly. Similar behavior has been described for several other benthic damselfishes and two other territorial reef fishes, and has generally been considered somehow related to reproduction. An alternate hypothesis, that it serves to help stabilize social systems based on territoriality by facilitating mutual habituation of aggressive levels between participants, is discussed.

Document Type: Research Article

Publication date: 1980-03-01

More about this publication?
  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more