Macrobenthos communities inhabiting coastal fish-farming earthen ponds have
been studied during two yearly seasons in three different farms of the Gulf of
Cádiz (SW Iberian Peninsula), two of them sited in Portugal (Portimao and Olhão)
and one in Spain (Puerto Real). Each farm has a different culture system and
hydrologic regime. We are presenting here the main characteristics, dominant
species and/or taxonomic groups and differences among the three studied ponds.