• [Wiki] http://en.wikipedia.org/wiki/Pungitius_pungitius.
• [AnAge] http://genomics.senescence.info/species/entry.php?species=Pungitius_pungitius.
• [ADW] http://animaldiversity.ummz.umich.edu/accounts/Pungitius_pungitius/.
• [fishbase] http://www.fishbase.org/summary/3273.
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