Skip to main content

Resource partitioning in a tropical stream fish assemblage

Buy Article:

$51.00 plus tax (Refund Policy)


An assemblage of freshwater fishes inhabiting a medium-sized stream in tropical central Vietnam was investigated with respect to spatial and trophic distribution. Point-abundance sampling, gut content analysis and relative intestine length yielded interspecific differences in niche expression. Conspecific juvenile and adult habitat and feeding niches were also distinct. Niche differences arose mainly from differences in current velocity, substrata and foraging preferences. Extreme specializations, such as selective feeding on hard incustrations of cyanobacteria by adult Annamia normani, were present. The low niche overlap suggests that this tropical fish assemblage is structured by competitive interactions.

Keywords: Vietnam; competition exclusion; diet; feeding ecology; habitat use; niche partitioning

Document Type: Regular Paper


Affiliations: Institute of Freshwater Ecology and Inland Fisheries, M├╝ggelseedamm 310, 12587 Berlin, Germany

Publication date: August 1, 2006


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
ingentaconnect 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
Real Time Web Analytics