Document Detail

Tool-like behavior in the sixbar wrasse, Thalassoma hardwicke (Bennett, 1830).
MedLine Citation:
PMID:  20095003     Owner:  NLM     Status:  In-Process    
There are only a few documented cases of the use of either tools or substrates (anvils) as pseudotools in fishes. Described here is an anvil behavior of a labrid fish, Thalassoma hardwicke, observed under aquarium conditions. This fish was fed with pellets that are too large to swallow and too hard to break up into manageable bits using jaws only. The observed individual carried a pellet to an anvil to break it up into pieces small enough to be swallowed. This feeding behavior was frequently repeated (observed in detail about 15 times), nearly always successful, and remarkably consistent, suggesting that the rock selected for an anvil is remembered and its functional qualities or other factors may play a part in its choice. These observations agree with evidence for other advanced cognitive abilities in members of the genus Thalassoma and suggest that, for welfare demand, rocks with rough surfaces should be provided to these fish, especially when they receive hard food for variety.
Łukasz Paśko
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Zoo biology     Volume:  29     ISSN:  1098-2361     ISO Abbreviation:  Zoo Biol.     Publication Date:    2010 Nov-Dec
Date Detail:
Created Date:  2010-12-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8807837     Medline TA:  Zoo Biol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  767-73     Citation Subset:  IM    
Copyright Information:
© 2010 Wiley-Liss, Inc.
Institute of Zoology, University of Wroclaw, Wroclaw, Poland.
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