Skip to main content

Free Content Color Pattern and Habitat Differences Between Male, Female and Juvenile Giant Kelpfish (Blennioidei: Clinidae)

Download Article:
(PDF 1,632.3 kb)


The giant kelpfish, Heterostjehus rostratus occurs in three color morphs; red, brown, and green, which vary in shade according to number of melanophores. Color morphs were usually collected from plant habitats matching their colors. Frequencies of the color morphs were linked to sexual dimorphism; adult males are brown (infrequently olive green) and adult females exhibit all three morphs. Juveniles are either brown or green and not sexually dimorphic. In addition to color differences between the sexes, adult males and females display different melanin patterns. These patterns are apparently used for intraspecific communication and cryptic coloration. Brown males are distinguishable from brown females by their sexually dimorphic melanin patterns. Melanin patterns, unlike coloration, change (often rapidly) during courtship and territorial displays. Adult males and females occupy plant habitats that differ in depth, predominant color, and species composition. The brown males closely approximate color of the plants where the nests they guard are found. Females occupy other habitats, including red algae, green surfgrass, and other species of brown algae. Females venture away from matching habitats during the spawning season to reach male territories.

Document Type: Research Article

Publication date: July 1, 1987

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
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial 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